How long does the heat shrink tubing last when exposed to the same elements as the FG antenna?
One thing that I do to help protect the antenna when trailering is to slide a 3 foot section of foam pipe insulation over it. Does 2 things: When the 8ft FG whip is folded down towards the stern, (parallel) with the cabin roof, it would bang on the aft cabin top, wearing on the antenna, and top. Now, there is a 1" foam thickness there. The other 2 1/2 ft stick out past the top end of the antenna, and prevent anyone in the cockpit from walking into the end and poking out an eye. A simple line, slip knot and tie to the boarding handle keeps the foam in place at 60 knots down the hiway. Works for me.
Harvey
SleepyC