If you really really want to plug the shore power cable into a protective thing just pick up a couple of these small ROUND RV30A/50A to 15A adapters.
Use the dremal tool and cut off the 120VAC side pronges then fill in with rubber compound.
The sock idea isnt all that bad as well haha...
Roy Ken
My Posts are IMHO based on my experiences - Words in CAPS does not mean I am shouting
Roy - Carolyn
RETIRED DOAF/DON/DOD/CONTR RADIO TECH (42yrs)
K9PHT (Since 1957) 146.52M
2010 F150, 5.4,3:73 Gears,SCab
2008 Starcraft 14RT EU2000i GEN
2005 Flagstaff 8528RESS