Would i be able to use my trophy ridge drop zone rest for bowfishing?

I don't think your rest would stand up to the heavy arrows and mud and goo of bowfishing. I'm not 100% positive on that, but to be on the safe side, I'd put a different rest on during bowfishing season.

You can get away with a really cheap rest, (like a roller rest) for bowfishing.

Just about any old bow will work for bowfishing, so it might be easier to just buy a $50 used compound/recurve and use that.

I'll have to second that motion.
Go simple and cheap.

Ill tell you what else works well i just use an eye bolt on my bow you donthave to worry aboutthe arrow falling off the rest. but sometimes the string gets wrapped around the eye bolt but works well overall....