Woody
800+ Posts
Most of these trailers are good to haul in being single or tandem. But take a look underneath and you will notice semi bare wood (floor is usually 3/4" thick) and very light weight cross metal supports. Eventually the floor will sag with trike weight. I use a similar trailer but have learned to beef up floor (welding additional 2" angle iron at point of trike rear wheels etc. across trailer, along side of existing light weight metal beams) and then spray all underneath with either bed liner spray or flex seal. Trailer will last for years of wear and use.
I had this issue with my 16 foot trailer, after I bent the crossmember back in place I started putting a 2x10 in the floor for the rear wheels of the trike to sit on spanning the weight across two crossmembers.