I need to put an antenna (am/fm) in my vintage Crestliner this coming
week, I'm looking for something that retracts fully so I can still use
a cover, extends to a good long length, (lake is remote) and can mount
in the thick fiberglass ahead of the windshield.

Most antennas I see are meant for mounting in sheet metal and don't
mount well in fiberglass. What works well? Any experience?
Suggestions?

Terry