3. As you know, pounding takes a toll on your boat. Water and waves wreak havoc with things like cabinet doors, latches, and hatches. Hull flexing will also loosen fittings. Once a month, check all the screws and bolts that are holding your boat and its systems together. You may need to replace a few fittings with something a little beefier. If you've been out in a good-size chop and, back at the dock, find open hatches or stuff on the deck below, it's time to add or replace a few latches and hooks. Even more critical is a frequent check of your engine mounts, battery box mounts, fuel line fittings, and other nuts and bolts on your engine. These are relatively "quick-check" items that, if left unattended, can cause major problems down the road. Look for nuts backing or loosening, discoloration, or cracking.