I can't say for big fish. As for carp in the 5 to 10 pound range, you can't beat the AMS retriever. I've shot 10 to 30 an outing and reel everyone in with the reel. I would say that a huge fish would take some effort though. I'd use gloves and hand line them in. No matter what you do with bowfishing, it's gonna get messy!
Either Carp guts or line tangles, something is gonna get cleaned up afterwards. Part of the fun!

later,
jmarti1