I've got an 18' and wouldn't go any shorter. It works great with 2 sleds, but it is nice to be able to throw a 3rd in for a spare, or if you need them they are all there. I am amazed at the room. I can get my 2 - 144's, 1 - 133, a Sno-Scoot and an XC120 all on the floor in the trailer. I can also get 3 long tracks in if that is all I am hauling but you have to load from the front to make it easiest.