"Best" way to weather proof 12 volt elec connection

Why would a termination that had heat shrink applied have to be cut apart? Pull the wire and it pops off. A sealant compound like 3M dries gooey like tar.

But to reiterate the Packard terminal would not heat up nearly as much under a 20-amp load as would a standard push on terminal.

And tar, is exactly what I used on the mast electrical connections of the Kelley. Laughing, I have to say as thick as the stuff went on, it would equal three thousand coats of Liquid Tape.