I attempted to make a cozy out of the blue foam, and I made nothing but a mess. After I rolled it, the foil all puckered up and as a result, it ended up too small inside. In order to make it big around enough to work it would be pretty bulky, so I decided to try the windshield screen version this time (haven't had a chance to talk to the a/c guys). I'll see how this one goes. The foam also seems to be pretty weak at the main seam because of all the tension of the foam trying to straighten it self out, so I think the windshield screen version will be more stable.

I think the problem may be that I have one of the cheapest blue pads out there, and it is much harder/stiffer than some of the slightly more expensive ones. The softer blue pads would probably work much better than the one I have.