Most heat rays will simply pass through the plexiglass but,
if you've got dark colored stickons on the top of the canopy
you WILL have a problem... it concentrates the heat right
on the plastic and you end up with an "inny" rather than an
"outy".

John

Yep. I forgot. That's exactly what happened. I bought that thing
and the builder had those on the top of the canopy. They concentrated
the heat on the plexiglass and melted my canopy. It sagged a bit.
But, I've been flying it for years that way and it's still just fine
as far as performance and no crazing. Interesting thing actually.

Bill