We have an 03 26' Howard cat which we rigged for the 1st time last year. It has a N/A 540 which made about 720 on the dyno (probably mid 600s with accessories and exhaust). Currently we're spinning a 28 prop which works great once on plane, but with 4 adults it struggles to rollover. I was thinking about adding a cavitation plate to the outdrive or fixed tunnel tabs. I'm leaning towards the cavitation plate because I don't want to drill a bunch of holes in the transom. I'm looking for something that will help with coming on plane and decrease the load on the outdrive.
Any suggestions?
Any suggestions?