I 've ownd a U.S.Cargo 24 four footer. We pulled it a bunch of miles with no troubles whatsoever.I would shy away from the vinyl walls in a race enviroment,they mark and tear easily. Funny thing on your comment "it's about time you got an enclosed trailer". I'm going the opposite direction, We are going to pull the kids 305 sprint car on an open trailer. Its Just kinda kewl pulling a race car down the road and collecting all the thumbs ups,grins & waves..