Bought a el chepo Carry-on 5x8 trailer a week or so ago. Just basic mesh deck, 1 7/8s ball, 12" tires. Wish the tires were the bigger size, but doesn't really matter. I bought it to keep downstate with me, so I don't have to rent a trailer, or drive up north to get one. Plus it's small enough that I can tow it (loaded) with my fusion.
Played around with it this weekend. Cut off the shitty 1 7/8s coupler and put a 2" one on so I don't have to keep switching balls. Then bought some 1.25 x 6 decking, carriage bolts and put a real wood deck on the trailer. Didn't add much weight, but I think it added a lot to the longevity. Before and after pics.