Cargo rack for Polaris Ranger

I'd like to find a cargo rack to use on my Ranger before next duck season. It's amazing how quick you'll fill the bed up with gear,decoys, guns, and a dog. Does anybody on here have one or know of a good one that sits pretty level with the top of the cab. I could use it to haul my layout boat on top if it sits that way. I've googled and only found 2 or 3 and none of them where what I was really hoping for. Its a 800 Ranger if it matters. Thanks fellas