What kind of foam do you guys use? I need to uplift my first trailer. I have a couple 120mm edf jets, giant scale warbirds, etc.. Plan to move into turbines with my next project (CARF Viper). I found the foam factory online. They have the charcoal foam up to 4" thick in any size I want. I think this is what you would consider basic commercial packing foam. Or should I be looking at some type of memory foam? I like the idea of covering my 2 shelves completely with 3" foam and then having smaller pieces under / around the planes.