rain water entering bilge thru mast.
It's winter and our 42' boat with mast in has a custom canvas cover. After a rainstorm I am always finding new water in the bilge and have been pumping it out for now. It is obviously coming in thru sheaves and track possibly. Unfortunately I haven't been able to get on the boat during the rain to assess this and if so does anyone have a thought on how to prevent the rain from entering other than unstepping the mast every year or going up the mast in the fall and wrapping it in plastic?