The heat that comes off the Freedom Top is really bad. I saw this thread and it got me thinking.
I was walking through Home Depot and saw these 4X8 foot foam insulation pieces. The foam surface is smooth with a slight texture.The reverse side is plain white - no printing. It has a very thin clear plastic film over both sides of the foam, it will not "flake". These come in a variety of thicknesses - 3/4" seems to work well, bought one piece for under $8. To cut the foam, use a razor knife but heat the blade with a propane torch. This will cut it like butter and heat seal the foam edges - don't want it red hot or you will completely melt the foam. I used 3M rattle can spray adhesive to attach to the roof.
The roof front panels are easy since you can remove them. For the front driver panel have to cut notches so can turn the secruing clips. 3/4" will let the passenger side go over without rubbing. The back is more difficult to do - it is really best to take the top off the vehicle, however, I did mine in place with some re-trimming and test fitting. Cover areas in back with a sheet/newspaper - you're not going to get overspray off! I used some cardboard that I cut and fit to make a template for the corner curves in the two back roof areas. You will have angle your cut foam piece above the speaker part of the roll bar, with the spray adhesive on the roof/foam it is a little tricky because its not going to slide.
I have used this for a month and it is great! My air conditioning works now when temps get towards 100 and I no longer have an oven raditating on top on my head. A sponge or wet rag easily wipes off the trail dust. Foam will dent if something hits it but I have had no difficulties so far. I thought about putting roof liner fabric over the pieces but decided I like it better the way it is.