Lowrance (or for that matter any FF) Terminal plug care

[ProfessorLongArms]

I've had my Hook5 for about a year.

After every use I wipe down my head unit with a damp rag, take a toothbrush with mild soap to the terminals, rinse the cable ends while washing the kayak, and reapply a dab of dielectric to each.

1 in 3 launches, I have an issue with a corroded power pin...
I've gotten to the point where I test it before loading it on the truck, but last night it started acting up on the water.

I've had luck with tiny wire brushes, steel wool, and once had to *slightly* bend the + pin so it's pressing against the the FM contact better.

Is this just standard for electronics and saltwater? Do you have a terminal hygiene ritual that spares you these headaches? I see a lot of people seem to like caps for their connectors. Any thoughts much appreciated.