How do you determine what trim tab size you need?

It’s best to talk to a marine dealer about your vessel requirements, but you can apply general trim tab sizing rules to get a general idea.

Not all boats are created equal, especially in the transom area. Some have shallow transoms. Others have multiple outboards or swim platforms that can limit the available transom space for trim tabs. The right tab size for your boat will be determined by a number of factors, including boat length and weight. The larger the tab size, the more lift they create. As a rule of thumb, go with the largest tab size that your transom will accommodate.

As a general guideline, one inch of trim tab span (per side) for every foot of boat length (for example, a pair of 24” wide tabs for a 24-foot LOA vessel).      

NOTE: Many experts will advise on fitting the largest tabs that will fit on the transom.