Our factory mattress was not cutting it, so we started looking for options. We found a sale on the sleep number RV mattresses and installed it in the 5'er. We extended the bed platform to accommodate the regular length mattress, ours came with the short one. So far we have not had any issues getting to the under bed storage. You do have to deflate the air bladders or they can rupture if you change altitude, so we deflate when we leave a CG and it only takes a few minutes to refill the bladders when we arrive at our next destination.
Me '70, DW'??, DS '98, DS '01, Ruby - the black lab
2014 Laredo 302BH/2013 Ford F350 SRW CC 4X4
Nights Camping 2014 - 13, Reservations to be kept - 16(so far)
2013 - 29, 2012 - 29, 2011 - 23, 2010 - 33, 2009 -35, 2008 - 29, 2007 - 31