Richard,
I am the one who recommended a heavier bow if you can easily pull it back. I agree when the action is hot and heavy you will be glad about a lighter weight bow fatigue wise. When fishing is like that you will have a lot of close shots so heavy bows would be a mute point.
I asked the same question 2 years ago and received the same type of responses:
http://tradgang.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=1;t=083962#000000 I bought a 43 lb recurve and both me and my wife boated fish with it. That being said, I went to a 50 lb bow because I was getting a lot of pull offs on the longer and deeper shots. When the bow fishing is slow and the fish are spooky, those may be the only shots you get.
Last year my good buddy Casey went out in Glenbo's Canoe. (Thanks Glen!
) The weather was cloudy and we had a big thunder shower come through. On his only real chance he took a shot that was about 15 yards with a 40 lb bow. I talked him through it and he made a great shot. It was short lived when the fish pulled off after hitting the weeds.
Same thing happened with my buddy Chris (exact same scenario) with my 43 lb bow and his gargantuan long draw. Great hit on his would be 1st carp. Pulled off! the next summer I outfitted him with 45 lbs. the fish was on the surface and he made a great shot but you can see even with the fish on the surface at 10 yards and his 30 inch draw the arrow has minimal penetration:
here are some 43 lb bow harvests:
Can you use lighter bows? sure. I just think if you can handle the weight 45+ would just be better. If I only fished the carp spawn I would probably go with a 35 lb bow. The fact is, I am usually fishing when I have time and not necessarily when fishing is Primo. I like having the little added insurance just in case.
Good luck with what you decide and make sure you post pictures of your fish!
Charlie