My 1981 Hunter 27 has been out of the water since mid October. All the port lights and hatches are closed tightly. I've tied a tarp over the forward hatch for extra protection. I have another tarp over the boom and tied closed around the mast. This tarp is large enough to extend to the toe rail on both sides, providing protection to the port lights. I have yet another tarp that covers the companionway. Everytime it rains, I find water in the bilge. Where is it coming from? The anchor well and cockpit are the only parts of the boat directly exposed to rain. The anchor well has no obvious leak. The cabin lockers are dry. The cockpit drains are working and show no leak when water passes through them. The scuppers just outside the coaming don't appear to be leaking. It's a complete mystery. Any help will be greatly appreciated.