A few years ago as I pulled our Trade Wind from it's covered port I felt a tug. I looked into the rear view mirror and saw that I had forgotten to close my street side front widow and it hooked onto the port cover upright pole. The '66's have curved frameless glass and it pulled loose from the clamp upper rail. The glass landed on it's edge, bounced a little on concrete.....and did NOT shatter. After a moment to close my mouth I went to my garage and grabbed a tube of silicone sealer and placed it with the window glass into the trailer and began our camping trip. At the campground it was a simple task to clean out the channel that holds the glass, fill it with silicone, close and latch the window and let it dry a day. That was several years ago. Of course silicone will not help a broken window but I wished to share my amazing experience.