Danlib1: One of the best and simplest things that you can do is to pack the "center aisle" that separates the individual air chambers from each other with foam. What they provide you with simply isn't enough, especially if you weigh more than 100 lbs. Doing this helps to maintain a more consistent amount of support for your back and legs. Otherwise, you'll end up laying across a "gully" that the lack of foam support creates and part of each air mattress as you roll around in bed.
If there is a drastic difference between the amounts of air pressure from one side of the bed to the other, you can vary the density of foam in the middle to act as a transition between the two. I think that you'll find that this will help out quite a bit.
For the record, i used a bunch of acoustic foam that i had laying around. I would guess that one of those foam mattress covers aka "egg crate foam" rolled up or cut into multiple layered sections might work just as well. You may have to experiment with the quantity and density that you have to use, but believe me, it is worth the effort. Doing this completely changed my thoughts / opinions about the bed.
I would start off with more than you think that you need, which may create a slight "hump" in the middle of the bed, as the foam is so soft that it easily crushes under the weight of a human laying on top of it. Speaking of "humps", this also provides a more even and consistent platform when "getting busy" : ) Sean
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