We just bought a new StarCraft Launch 26 RLS, the literature states that the total length is 30'11" bumper to hitch, is this trailer considered a 26 or 31' trailer.
It will handle on the road like a 31'. It will turn while backing up like a 31'.
I have always considered total TT length to be the proper number for length. If you mounted a 16' Scamp on a 40' flatbed trailer, you have a 40' trailer. Not a 16'.