I have the same problem. My feet hang off the end of the &%#$@ mattress! Have to do what some are saying on here...get a regular mattress.
2013 Jayco Eagle 328 RLTS
2012 Ford F250 6.2L 4x4 CCSB W/Air Lift air bags
2002 Coleman Bayside Elite (traded)
Me, Momma and Charles (RIP buddy)
And introducing Sofie!! ;)