where can i get bowfishing stuff?
http://www.amsbowfishing.com/
Retriever:
Don't need a boat if you can find some shoreline to walk where there are legal fish within range (generally only rough fish like carp, gar, etc are allowed to be taken by bow). Many bowfishermen have never done it from a boat. Just make sure to respect private property and local laws -- some municipalities do not allow shooting a bow within city limits.
what do i do once i shot the fish and reel it in?
Put them on a stringer, in a barrel, or on a wagon. You may wish to bop them on the head to avoid having them flopping around on the bank scaring away other fish and possibly getting back into the water.
Some can be eaten, but all make great fertilizer. Gar are boneless, but the skin is so tough you'll want tin snips to cut them open.
See the fish cleaning instruction linkson the left side the the Illinois Bowfishers' home page...
http://www.illinoisbowfishers.com/
Good luck.
-Bulz