What's the deck made out of?
I've got a trailer with a rollback bed that has extruded aluminum snapped together/welded to the rails for the deck. Have no complaints about it....very tough. Good traction when wet. Wet dirt tends to stick to it when dumping but always comes off at full tilt and some brake stomping in reverse.
Also have some 4x10' diamond plate T6063 1/4" aluminum sheets that I picked up on Craigslist for cheap....that stuff is tough too! I'd choose an aluminum deck over a wood deck for equipment hauling any day.