Bowfin - or grinnell as we call them here - are a fun catch. We use heavy duty crappie poles and let cut bait settle to the bottom - usually no more than three or feet deep. If Mr. Bowfin is there, he WILL find it. He'll tap around for awhile, then run with it. When he gets as far as the line on the pole will go, snatch hell out of it and hold on!
Contrary to what a lot of people say, bowfin is delicious! Filet them the same way you would a bass, crappie or anything else. I prefer to chop/grind it and use it the same as canned salmon for croquettes. However, if you have the time, slow smoke it. Other than the whiter color, you won't be able to tell it from smoked salmon. Just one key: Don't never ever wash the filets. Just pat any blood or excess water off with a paper towel.