http://www.acestriperguide.com/BowfishingFAQ.html
Best bow for bowfishing is a 50-55lb recurve. Allows you to snap-shoot and to shoot at less than full draw for fish that are close and close to surface. Older compounds having 50# draw w/50% letoff is ok.
I use my old 50# draw-weight 1975 circa PSE Pacer and a 45# recurve (4" draw over 28" = roughly 53#-57# draw-weight). I also make my fishing arrows.