Oh come on

capt slarty has a lot of experience which we can all learn by.

A lower insulator is not needed from a rf point but corrosion may be a problem so attach the hot Rf in a way corrosion won't be a problem.

RF earths are good with copper strips but also just a cable to an earth also works. (my ref earth cable just attaches to the sternrail and its performance is brilliant. )

So forums give us a chance to hear other ways to skin a cat