My solar panel was mounted with 3M tape, and the panel blew off about a month after the trailer was manufactured. I had the trailer prewired for solar and told them to install the panel about a week before picking up the trailer.
The panel was installed and set out in the cold a couple of days after installing, as production was complete (December 2011). They thought this may have contributed to a weaker bond possibly?
The panel blew off in Wyoming when pulling the trailer 55-65 mph with wind gusts of 55 mph and temperatures in the 20's F. So the wind hitting the solar panel could have been 120 mph!!!
They sent me a new panel with epoxy to mount it. I have pulled the trailer in similar conditions, and have not had any problems.
2009 Chevy Silverado
2011 19' Escape