Originally Posted by
capnzee
a couple of additions such as "whales tales" bolted to the cav plate will assist the boat getting on plane. They are used extensively on small/short "blow" (rubber dinghies) boats. Once on plane, these additions to the cavitation plate will usually be out of the water reducing the drag they would cause if the engine was mounted lower. They will also dampen out a tendency for your boat to "porpoise". These "plates" are often used in outboard drag racing set-ups. They will help in acceleration by getting the boat on plane quicker. Rod