The 07 Lexington 283 GTS that my parent owned for a couple months last summer had jacks at the rear that the original owner had installed, they were Bal scissor jacks. Dad said that they used them once but didn't notice enough difference to justify putting them down again because the camper was pretty solid as is. The jacks were just bolted directly to the frame.
TT-2013 Passport 3220BH
TV-2004 F150 FX4, not exactly stock...
with 2001 Kodiak K215: 2010-10, 2011-12
with 2012 Grey Wolf 26BH: 2012-19, 2013-24, 2014-11, 2015-6
with 2013 Passport: 2015-13, 2016-15 booked