I bought a roll of insulation and made my own. The
stuff I used is made of plastic bubble material with aluminium foil
on both sides. It is available at hardware and RV stores here in
Arizona.

I made a screen for the front window and individual screens for the
cabin windows and the rear window. I put two suction cups on every
screen execpt the one for the front window which is held in place by
the sunvisors.

The rear side window screens stay in place all the time. I put up
and take down the other screens in about three minutes.

It helps a lot, but it is still not enough:(

John-Reed Maffeo '86 Syncro Glacie