There are several bowfishing gear suppliers you can find on the internet.
3Rivers has fishing stuff, but you will find a better selection on other sites… Just google bowfishing and see what comes up.
I use a long bow for bowfishing and it works fine. I use an AMS retriever reel, and I just screwed it to the riser (home made bow, so I don’t care)… But if I had it to do again, which I do I guess, I might go for one of those old fashioned hand wrap deals. They weigh less, and are simpler… But nothing beats the AMS reel for easy retrieval.