Does anyone know of any good fishing affiliate programs?
Not off hand, I don't. What I've found is the best way to find out what a good (or bad) program is to find out who the best merchants are in the space.
Then, if they don't have a program in place, ask them about it, because a surprising number of sites are willing to be flexible for affiliate style marketing because they have less up front risk.
If they do have a program, test it out for a month or so, see how it converts, and see if you can talk to another affiliate or two who's tried the program. That way you can get a feel for if it's worth your time or not.