The best one for my v-bottom boat
The black one is in my boat, the red one is the old one. It came out of my 18' CP and was supposed to be a high speed unit according to Bill Scotten. B1 told me two years ago that it's old school. It's almost completely blocked off in the center, I have no idea how it would perform in your boat but you're welcome to try it out. It came off a Berk, so should bolt up to yours.
I'll be at my shop in Elsinore early Saturday, but the rest of my weekend is booked (wife's birthday).