On Apr 27, 9:41*pm, bagmaker
wrote:
-There is also an illusion caused by rain on the canopy that makes the
glider appear higher than it is - causing the pilot to flare higher
than normal.

I have never heard of this wet canopy illusion...

Not one of the standard texbook visual illusions... which doesn't mean
it's not real.

The things I noticed when the dark cloud overhead opened up when I was
on downwind one day was that visibility was terrible AND the yaw
string stuck to the canopy AND there was terrific sink. I flew a very
small pattern...

DJ