Mossberg, Welcome to the addiction.

Well...First you'll need a reel. I would strongly suggest an AMS retriever reel. It mounts to your sight/quiver mounting holes. That's OK, you won't need the sight or quiver while you're bowfishing. Most shots are close and most folks shoot instinctive.

Next you'll need a rest that will hold a heavy fiberglass fish arrow.

That brings us to the arrow. Absolutely, positively - do NOT use an arrow W/O a safety slide on it. Make sure you get at least two arrows. You probably won't lose one with the AMSset-up. But if you do, it stinks to have to stop when you lose an arrow.

As far as where to go, I'll let one of the OH guys take that one. For general info check out the bowfishing basics article at the top of this forum. It will give you a few more options on ways to set-up your PSE.

One other note, before you go, have a plan for how you will use/dispose of your fish.

Good luck, have fun and be safe.