NM;
I would think that either style of hull would have its advantages or disadvantages but its really gonna depend on the stump you are dealing with at that time, the angle you hit or bump the stump, how much weight in the yak, any wind, the speed you hit it, etc., and then if you have a rough spot on the hull, the stump could have a bit better grip on the yak hull as well. Just have to work yourself off the stump with some patience I guess. You will have a better chance of success every time you get hung up with the experience you gain from the previous stumps.
GO BIG ORANGE !
I meant to behave, but there were just way too many other options available at the time.