These can take a 300 hp mounted to standard transom as is
Most are fitted with 200/250 hp,lumps so should be fine as is, putting a stainless plate internally to assist in spreading the load will do no harm great believer in using large stainless washers internally, 60mm but that's me
What's going on it?
I have photo of one some place I did where I cut a section of marine ply and coated in glass with flocoat on top to act as a wedge will search for it ,
Cavitation plate wants to be an inch to inch and a half above the bottom of the hull
MY BIGGEST WORRY IS THAT MY WIFE(WHEN I"M DEAD)WILL SELL MY TOY'S FOR WHAT I SAID I PAID FOR THEM.