Get some bearing buddies for the trailer wheels if it didn't come with a grease fitting. Keeps your bearings packed and saves a load of maintenance. Just don't over pack them and blow the rear seal. Don't leave your trailer in the water for any longer than needed. Water in your wheel bearings will cause for a major headache on the highway when your wheel comes off. Pull your hubs at least once a year to check the condition of your bearings. Water will eventually get in.