Why Aren Daggerboards Or Rudders Used In Trimaran Floats?
Because they add extra weight and complexity, twice the work in fact, and they just don’t work well. It is virtually impossible to steer the boat while folded with rudders on the floats, and the boat can be difficult to control under power with float daggerboards as these also cannot be used while folded. The boat then tends to have a hovercraft like motion, crabbing sideways due to the lack of any lateral area – becomes very difficult to maneuver in any confined locations, or just prior to putting on the trailer. A few boats in Australia and New Zealand have tried such configurations, but soon abandoned them.