I have a 7x18 plus 5 V-nose. have had 3 137s, 2 137 and a 146, 2 146 and a 137. I like it the best with only 2 sled in it lots of extra room to move around or store gear bags. A 16 ft is a unicorn trailer from what I have shopped. I do like how the 7 or 7.5 inline trailers tow over the 8 wide.