In January 2016, we replaced our original mattress on our king size bed in our 2015/2016 Seneca 37FS with a Sleep Number Bed. Since the mattress has to slide under the small slide out during travel, we felt this might work. It does.
However, I have learned, for use of no better words, we like to sleep ON a mattress, instead of IN a mattress. Both of us sleep with the mattress at 100. People that say they like to sleep at a number 35 like to sleep IN the mattress, instead of ON a mattress. Anyway, both us were surprised as to how soft number 100 was on the sleep number bed.
After 15 months, we decided to experiment and purchased hard cell foam from a mattress foam company, that custom cuts to our dimensions. We had a foam pad cut to go under each sleep number bladder. They are 2 inches thick and shorter than the bladder chambers by 4 inches on all sides.
We've had the foam pads under the bladders for a week and the results are very favorable. So far both of us are still sleeping at the 100 number, but the wife has talked about trying a slightly lower number.
Now we have a very firm mattress and it still slides under the slide out. We are basically staying in the Seneca full time, so yes it matters.
Saw this other posting and started to comment within it, but decided it was better to post on a new thread.
http://www.jaycoowners.com/forums/f5...s-43916-2.html