Tag Archives: fishability

From boat design to production

How are these small boats made?

Here is a glimpse into the process of making a mold for Wavewalk’s newest portable skiff, the Series 4 –

The pictures below show the wooden pattern produced from solid wood and hard rubber from the CAD (computer Aided design) file for the product.  This first-generation mold will be used to produce a second generation mold called a sand mold. The mold makers will cast molten aluminum into the sand mold, and produce the actual rotational mold in which molders will pour Polyethylene resin, and produce the Series 4 boats.

The cockpit features slanted sides designed to allow the passengers to paddle this boat effectively with either canoe or kayak paddles. Paddling capability is critical to mobility and high performance in shallow water and weed infested water. This design makes poling easier as well as more effective.
The stand up casting platform is supported by integrated structural beams that look like slots when viewed from the top.
Front view that shows the S4 two hulls, which make it a full catamaran.
The stand up casting platform at the front – a typical skiff feature. This platform is particularly appreciated in flats fishing, by fly anglers and other fishers who practice sight fishing.
Rear view with the integrated transom motor mount.
Side view of this ultralight portable skiff.
Bottom view of the pattern for this boat.

More information on the Wavewalk Series 4 »

The typical fishing kayak is a cluttered barge

This short review of recent kayak design articles highlights some aspects of the common fishing kayak.

The first, and probably most striking thing about the typical SOT, sit-in or hybrid fishing kayak that’s offered in stores or online is its size – It is huge, and consequently heavy and hard for one person to carry and car top, as well as hard to paddle, especially in wind and current.
Those kayaks seem to have crossed the line between a kayak and a boat, or a skiff, since practically speaking they require transportation by trailer. And indeed, some manufacturers already refer to their larger fishing kayak models as boats, not because of their performance or some additional functionality, but due to their size.
Needless to say that this fact alone is evidence that such kayaks defy the purpose of kayak fishing.

The second most striking aspect of those large-size fishing kayaks is the dysfunctional clutter in their cockpit and deck that seem so crowded with fishing accessories and just ‘stuff’ that the angler sitting or attempting to stand in them literally has no room to do so. These objects range in size, from small cup holders to large size lean bars, and their presence in the kayak’s cockpit is not only unnecessary to the angler, it is clearly counterproductive.

The third interesting thing about these larger than life (I.E. too large for real people to fish from in real life) kayaks is the absence of hydrodynamic design in them: They are not even close to conform to basic boat design standards or even to common sense: Not only are they much too wide for their length, which slows them down and makes them track poorly and require a cumbersome rudder – their underside features a variety of design elements that are extremely counterproductive as fare as speed is concerned. Such elements can be multiple scupper holes and molded-in channels, fins, and even a skeg.

Ironically, none of these accessories, systems and design elements offers a real solution to the fundamental problems that the average angler experiences when using them –

These unsolved problems in these common fishing kayaks are:

1.  Poor ergonomics, meaning mainly lack of comfort, early fatigue and back pain, as well as bad bio-mechanical design, which the angler feels as a restricted range of motion in both paddling and fishing. The new beach seat style kayak seats are obviously a botched attempt to address this issue, as foam filled seats failed to do so in the past.

2.  Insufficient stability albeit the fact that these fishing kayaks are extremely wide.

3.  Wetness as a result of the kayak offering too little or no free board, and scupper holes that conduct water upward onto the deck and cockpit, a problem annoying to a point that  manufacturers have to offer scupper plugs…

4.  These kayaks are as wide as canoes and as as sluggish and unfit for paddling in strong wind, waves and other real world factors.

5.  With all the stuff tucked on board a typical SOT, sit-in or hybrid fishing kayak, such craft still scores very low in terms of storage, as one or more hatches address neither the need for enough storage space nor for adequate accessibility to the gear stored inside.

In contrast, the Wavewalk 500 series of twin hull kayaks offers a high level of fishability in all these factors.

References –

More is less in your fishing kayak’s cockpit – Too much stuff and too little fishability

The secrets of the SOT kayak’s underside

THE BARGE – A NEW CLASS OF FISHING KAYAKS

Fishing kayak design – the best and the rest

People looking for a kayak to fish from could get confused and think they face a broad and perplexing variety of kayak types, brands and models to choose from, while reality is much simpler and easier to address.
This article suggests a number of ‘go or no go’ criteria that anyone can apply in the process of eliminating fishing kayaks that are not worth consideration.
To make a long story short and save the reader’s time, there is currently just one kayak that normal people can use to fish from without sooner or later regretting their purchasing decision, and this is the W kayak.
The reason why there is only one such kayak and not a plethora of designs is because its design is based on a a utility patent (proprietary invention) which prohibits manufacturing or selling it without the patent owners’ permission.

What makes a kayak angler’s life miserable?

Anyone can understand that being small, frail, unstable and uncomfortable craft, kayaks are not necessarily a fisherman’s first choice. This still doesn’t disqualify a kayak from serving as a fishing boat, but it does raise a few red flags –

Safety – this means mainly stability

Kayaks, including those designed for anglers and hyped as being very stable, must be stable indeed, since marketing hype may get you to buy a kayak, but it won’t prevent it from overturning when you’re inside. Furthermore, hype can make you feel good about your kayak’s stability, but it no longer works to this effect once you start fishing out of the kayak, unless you’re a young, small size, lightweight and athletic dude… In case you are, you may stop reading this article, and go get yourself any fishing kayak out there that fits your budget…  But if you’re an average guy, or middle aged etc. – you’d better get a kayak that’s stable enough for you, and that means in real-life conditions – or you’d suffer and put that thing for sale on Craigslist after some time.
And what is the definition of a stable fishing kayak? Simply, a kayak that makes you forget you’re fishing out of a kayak even when the wind is blowing and eddies are hitting you, even in moving water, even when you’re standing up, and even if you’re an average guy and not a young, small-size athlete. In other words, a kayak that’s really stable, in real world conditions, and for a real-life people.

Protection – this means mainly staying dry

One may argue that getting wet is part of any paddle sport, and it’s also part of fishing from kayaks. We think differently, and we think most fishermen would take our side in this debate. In other words, we maintain that any boat that’s used for fishing, including kayaks, should provide its passengers with sufficient protection from the elements, including wind, spray and waves. In other words, if you have to fish out of a kayak, it should be one that features enough free board to keep you dry. No sit-in, sit-on-top (SOT) or hybrid kayak out there offers this feature, and the passengers of such kayaks are over-exposed to wetness. The only difference between these kayak types is that a SOT won’t get filled with water if it’s washed by eddies and waves, while a sit-in or hybrid kayak would. The only kayak offering an angler to fish out of and stay dry is the W, since it’s the only one featuring enough free board to protect its passengers.

Ergonomics – this means mainly comfort

In case you haven’t heard, kayaks are notoriously uncomfortable, which is why fishing out of one is a challenge for most people and can turn into a torture for some – unless of course you’re young, fit, not too big (see suggestion in previous paragraph)… The comfort criterion rules out practically all kayaks except one. This is due to the fact that except the W kayak, all other kayaks force their passengers to paddle and fish with their legs sticking out in front of them, in a position nicknamed the L position. What this position does to you is get your legs to continuously push your back against your seat’s backrest, and sooner or later, this pressure starts generating growing discomfort, and later pain. This painful condition is nicknamed ‘yak back’, and in the long run it can become chronic if you don’t slip into something more comfortable, such as a W kayak. The latter is the only kayak offering its passengers to ride a high saddle, in a position similar to the one offered by All Terrain Vehicles, Jet-Skis, Snowmobiles, etc. In other words, a position that’s powerful, comfortable, and creates neither pressure nor stress on any part of your back.

Design considerations

Nearly all fishing kayaks out there belong to one of the following common basic designs:

1. Sit-in kayak (traditional)

A kayak design inspired by aboriginal kayaks. You sit in the L position, close to the water, with no protection from spray, eddies, waves, etc. Bottom line – You’re unstable, uncomfortable, and unless the weather is perfectly calm and sunny, you’d be wet and probably cold too.

2. Sit-on-top kayak (SOT)

A kayak design whose name is somehow misleading, since a SOT kayak is little more than a paddle board outfitted with a seat and footrests. Sitting higher than in a sit-in kayak makes you less stable, which is why SOT kayaks are usually very wide, and this also makes them hard to paddle as well as slow. In other words, most SOT fishing kayaks are ‘barges’. Some readers might be surprised to learn that contrary to the common belief (hype), SOT kayaks are not self bailing, and like any other watercraft, SOT kayaks can capsize.

3. Hybrid kayak (shallow canoe)

The hybrid kayak design is a crossover between a canoe and a kayak. Essentially, it’s a shallow canoe offering little free board. The hybrid kayak is smaller than common canoes are, which makes it possible for a passenger to paddle it from its middle part with a dual-blade paddle instead of a single-blade (canoe) paddle. Hybrid kayaks can be used only on flat water, and they become impractical on windy days. Regardless of its hull’s form, a hybrid kayak isn’t and cannot be noticeably stabler than a canoe of similar size, and no amount of hype could change this basic limitation on its stability, and therefore on its overall fishability – Anglers intuitively understand the meaning of this word.

4. Pedal driven kayaks

A pedal driven kayak can be a sit-in, SOT or hybrid kayak outfitted with a pedal activated propeller. The pedals can be either rotated or pushed, and the propeller can feature blades swinging left and right, or rotating. In any case, the operator of such kayak sits in the L position, and pushing or turning pedals with their legs exacerbates the discomfort and back pain because their legs push their back against the seat’s backrest more vigorously than they would in a paddling mode.

5. Outrigger kayaks

This category encompasses all kayaks featuring outriggers, whether added or incorporated into the hull. Without discussing every model in detail, the bottom line is that such kayaks offer far less real-world stability than the hype around them suggests. This is because in order to be effective for stabilization, outriggers are required to be big, located in the middle section of the kayak, and at a sufficient distance from its main hull.  None of the outrigger fishing kayaks meets any of these requirements, and practically speaking, each one of them is an exercise in futility, to some extent.  In addition, fishermen don’t like outriggers since these have a tendency to snag fishing lines and interfere with paddling (range of motion), as well as impede the kayak.

One fishing kayak belongs to neither of these categories and presents none of the problems listed above. It is called the W kayak, and it offers numerous additional advantages that are not discussed in this article, since it is already a bit too long…