ive been told it is 85 1/2 ft. and something like the last axle behind the truck couldnt be any further back than 28 ft. i researched it awhile back but my fifth wheel and boat combo is too long. i believe with a 31 ft trailer and a 23 ft boat you should be just fine. also remember that the swim step also counts as overall footage. hope this helps.
Last edited by tims72; 06-14-2010 at 6:01 PM.