 What is watercraft? It's an expression that absolutely pains me. It sounds like something like witchcraft Let's cut to the chase. It's an understanding of science, learning about fish behavior, ecology, biology, learning how water moves Learning about how temperatures change and are transferred. You might not think of currents in lakes There is one. You've got to think of prevailing wind where the silts get deposited It does tend to come up to this end of the lake So that extra little bit of ripple means the sun doesn't penetrate directly through and make the surface like a glass mirror Fish can't see me and I can't see them. Even on a still water like this where the fish are enclosed They will migrate from the margins or from one end of the lake to the other depending on water temperature Depending on where their food availability is that ripple also gives a slightly higher surface area So more oxygen in the water. The shade means the temperature is marginally lower, more oxygen That's watercraft