Folks,
I had been worried about canopy air leakage, given I will be flying year round in Calgary, Canada. I had a really good understanding of the problem and wanted a simple effective solution with nothing to carry or fiddle with. The problem, as I witnessed was in flow at the rear near/around the slider track and outflow along the sides.
I bought about 14" of heavy duty marine vinyl (black) and cut a strip just less than 6" wide. Then I glued about the first 3/4" along the back edge of the glass. As the strip was strait cut but the glass is domed and geometrically U-shaped the tension on the strip pulls it realy nicely about 2-2 1/2" from the canopy (see photo). After test flight I cut a 1" slit centered on the slide rail and that made a really good thing better. The canopy opens and closes without noticing it is there, and the air pressure differential "inflates" the seal.
For the sides I did the same with about 2" strip with bottom 1/2" glued (remember this is outflow leak). It works equally as good except that it does not self seal...i.e. once in the air you have to run a finger along to get the seal seated.
About $8 worth of vinyl, contact cement, and 1.5 hrs to remove canopy, apply and reinstall. Will see if it works well when really cold but so far OK.
...sorry can't seem to figure out how to post photo.

