According to this article, the answer to this question depends on who’s asking – It’s possible for young and fit anglers who are willing to compromise substantially to fish out of kayaks, but all others are effectively prevented from doing it, because typically, kayaks are neither stable nor comfortable enough for serving in the capacity of a fishing vessel.
Stability and comfort, namely ergonomics, are related directly to boat design, and kayaks don’t necessarily have to be unstable or uncomfortable. With the same size of a typical fishing kayak, Wavewalk’s W720 and S4 provide a much higher degree of stability, seaworthiness, and comfort. People who use these boats never suffer from back pain while they travel in them, or fish from them, and neither do they experience instability when they stand up, as they would in SOT fishing kayaks, .
And by “people” we mean everyone, not just persons who are young and fit.
Speaking of Boat Design, words are not enough, and one must use numbers: The above series of images shows the W720, a patented catamaran kayak skiff that weighs 85 lbs, and is 31 inches wide. These dimensions make it easy to paddle compared to the top tier SOT fishing kayaks who are always wider and in most cases considerably heavier, while providing less stability than the W720 design does.
85 lbs and 31 inches are low figures in this field of top-tier fishing kayaks, and they also make Wavewalk’s kayaks easier to cartop, transport, and carry than other fishing kayaks, which can weigh over 100 lbs (up to 140 lbs!…), and be as wide as 42 inches, namely “barges”.