In Kentucky we are blessed with lots of rain and plenty of mildew so it's a constant battle keeping the boat from mildewing. If you have darkness and dampness you can start mildew, so get everything dry. If you find some mildew starting try spraying Lysol for mildew on it. I always get caught in rain and I never want to store my boat that way. So after I back the boat into the garage, I empty it and get some old towels to absorb most of the water. In some areas like under the console I have used a hair drier. Finally I place a box fan on the bow of the boat and let it blow air over the deck to get it dry. Prop all of the hatches open. I dry off everything before I put it back in the boat.