Be a commercial fisherman. As many people Ive seen lately selling their catch (drum, carp, buffalo, and other trash fish) to the "hood" and getting some good change I would imagine it could be woth a shot. Heck even if it just pays for my boat and a few bills and I net free fishing time...well, that aint too bad.

I talked to a feller a couple years ago that made over $30K just on paddle fish eggs from the Ohio!