Fished out of a Kayak for my first time last year. I was going to replace my Belly Boat with it. Good thing I tried it before I bought. I hated the Kayak. Whenever the wind kicked up a little bit, I was moved out of position. Also, When moving from spot to spot, I can troll with the Belly Boat. Not so with the Kayak. In the Belly Boat, both hands are on the rod while you padlle with you feet. In a kayak, you have to paddle with your hands. Hence, every time you get a hit, You have to drop the paddle and pick up the rod. Hence, fish off.
Look into the top end of Belly Boats/U Boats before buying a kayak. I think you'll be a lot happier in the long run. You'll even save some money. ;D