I have a 2012 micro lite 23lb, we purchased ADCO Designer Series model 32841 which measures 20 to 22 feet. The box of the trailer is only 20 foot with the tongue adding 3 feet.
I even had some slack which they give you clips to make it tight plus addition loops if you want to use rope or bungee cords.
Let me know if you have other questions.
Tim & Tracy, Jennifer (14), Alyssa (10), our dog Jazy (5)
2012 Ford F150 EB Crew FX4 3.73 gears
2012 Flagstaff MicroLite 23LB
Previous TV: 2006 GMC Envoy Denali 5.3L V8
2005 GMC Envoy SLT 4.2L I6