[Wyota]

Well, based on your advice, I gooped the poop out of the switches (not so pretty now), and I decided to use a liberal amount of dielectric grease on the box seal. Took it out, and while it didn't get a full dunking, it got pretty wet. Appears to be no moisture whatsoever inside the box. Gotta give it a few more days to check for any moisture or corrosion, but appearts to be holding up pretty well. After use, have decided to mount the ff to the top of the box (assuming it passes the longer term corrosion test).

Goop is great!!!!!

Update: 16 days later and nary a bit of moisture or corrosion. I'll keep inspection, grease and regoop as needed as a critical pre op check and it should be fine. Now to build out the light rig.