5 inches of foam board in bed?

Just a follow up. I feel pretty good about going with the 2 x 6 platform. I may trim it down an inch. I set a rubber mat in the bed and screwed the camper to the platform. I also wedged 2" foam board between the platform and inside of bed. Only suspension mod is Stable Loads. It has a little sway to it when the wind blows, but feels good.



Thanks everyone for your help and advise.
Vic