I am the new owner of a 1977 Pearson 28. The boat is on land for the winter and the bilge is still filling up. We just removed the main cabin windows and reinstalled them which stopped the windows from leaking. We got a huge amount of rain this week and from last Saturday to today the bilge went from empty to full. Any ideas where all this water is coming from? Also the cabin roof is tarped from just aft of the mast to where the cabin meets the cockpit.