Well, success with canopy glue as you guys recommended. I roughed up the covering with a little sand paper and then *****ed holes in it along the glue line and then added Formula 560. Tied rubber bands all around the canopy and let sit over night. So far so good. It seems good and secured with a nice clean finish. Thanks for your help and suggestions.

To keep the humidity out, and to keep the pressure equal inside I simply drill a small hole in the top of the canopy toward the very back and centered.