Has anyone tried to put an air mattress under the stock bunk end mattress? I did the obligatory Portal search, but couldn't find anything on the subject. I'm not talking about one of those over sized monstrosities that would make my nose touch the ceiling of the bunk end canvas, but rather something like a 6" deep mattress. I have a Sleep Number bed at home that I have used for sixteen years and it worked great for my aging and aching back. I bought a new Sleep Number bed last month and noticed the new technology is quite simple - air mattresses under many inches of something similar to memory foam. So I was thinking that adding an air mattress under the stock mattress would work similar to this system. In my research, I have found that many queen sized air mattresses would fit perfectly under the stock mattress (60" x 80") in my pup. Just place it under the stock mattress, pump it up for a Sleep Number in the pup, then deflate it when I need to lower the roof. I have seen many a post here on the Portal on the alternatives to stock mattresses and I am not looking for advice on those. I'm looking for feedback on just this air mattress option. My pup does NOT have room to add any memory foam, the padded floor mats don't make that much difference for me and we use the heated mattresses so I don't want to replace them with something else. My main concerns are durability and would the heated mattress doom the air mattress to a short life. Please let me know if any of you have every tried the air mattress under the stock mattress option or give me your thoughts on this. Thanks in advance!