Patti,
Your idea to insulate the pop top is the most sensible in this thread. Several years ago when I lived further south I did this on a westy. I used a sheet of 3/4" thick polyurethane insulation (this is the denser, non-crumbly rigid insulation you'll find in building stores. Dow makes one brand). I cut it so it was a tight press fit inside the pop top. I don;t recall if I made any other arrangements to fasten it, or if it stayed in by itself. It can be made to look better by glueing on a cloth that matches the color and texture of the pop-top inside. (Or you could get creative with some other decoration)
Martin
  
On Thursday, June 11, 2015 5:55 PM, PB <pbrattan@GMAIL.COM> wrote:
   I was just wondering if there was a way to *insulate the roof* of the pop
top, either from the outside or the inside.
Patti