Power Pitch Prop?

[TarHeeLBoater]

any one ever heard of anything like this? The engine runs strong and it has been taken well care of. We slept and camped on the boat. It will carry 8 to 10 people easily and we pull skiers right out of the water. It has a power pitch prop that changes pitch from a 17 to a 21 as soon as it plains out so you get the power to plane quickly and then speed with a higher pitch prop.