A bracket will shift your CG aft by 12-18", so the lighter your motor is the better. Even though the Hermco bracket has the most flotation of any bracket on the market, that doesn't help when you're on plane and the flotation tub is out of the water. esp. when trying to hang on plane at low speed for a more comfortable ride when you get into a nasty chop. Plan on adding a 4B stern lifting prop, trim tabs and an AV plate fin. If you haven't read
this post, check it out.