Ogrich,
If you like the recurves, just get one that fits your hand and is lightweight. You'll tend to hold your bow all day instead of putting it down or resting it like most of us will do when hunting game on land. Any bow gets heavy after a couple hours, but the big clunkers will make you want to throw them in the water.

Anything with 40 to 50 pounds of draw will work forbowfishing.