If emails to the editor lfo Boating Magazine and anecdotal information from boatbuilders and boat dealers is any indication, a substantial number of boaters express confusion about how to trim their boats’ engines or drives. Certainly this applies to getting on plane, adjusting for load, trimming for ride comfort or to suit sea conditions, and more. Let’s review the basic principles of how to trim an outboard or sterndrive boat through turns. Learn more at Boating.