Not clear why you cant look for/address the source of the water now??
Mostly because nothing would cure in sub freezing temps. I have the whole boat tarped, and I really don't know where the water's getting in. The tarps aren't perfect, but I was very surprised to see that much water in the bilge. All summer I'd never have more than an inch after a week on the mooring even with a big rain. The windows do weep, but I think there must be something else going on.