Join Date: Mar 2007
Location: New England
Thanked 7 Times in 7 Posts
Rep Power: 10
Bene505, you over thinking
I see you have your boat in New England, so is mine. In the winter, it's pretty dry here, so a lot of moisture in the air isn't really an issue.
Getting and keeping the water out of the boat is key. Keeping the decks of the boat dry is the job of the cover. Keeping the bilge dry, low water in the head and water tanks, coupled with a a few damp-x (calcium chloride) tubs, should be more than adequate. No need for active dehumidifier or webcams, etc. Visit your boat frequently and dry the bilge and wipe the walls for any condensate and you'll be fine. Make sure you remove all cushions , clothes, and other soft goods from the boat and sore them in a dry place.
When spring rolls around, spray bottle a weak bleach solution on the interior walls and surfaces and your done. You're going to get some mildew/mold in a boat over the winter if you store it covered outside. Starting dry and keeping it dry will significantly minimize the mildew in the spring.