The unsinkable multihull has a flatter ride and no broaching. Speed is generally greater but it depends on the model. Greater stability, smoother rides, more living space, better speed. A trimaran is more like a monohull, but it's wider and more stable. It generally has less interior living space than a larger catamaran.
Trimarans are easy to single hand sail and tack because everything is lead to the center cockpit.
Under 35' trimarans provide more useable space. Over 35' catamarans provide more useable space. We teach advanced techniques for multihull sailing. You must already have a basic knowledge of sailing. How to maneuver wide boats.