>Some solid test data confirming claims of higher efficiency, using several styles of boats, would go a long way to building trust.<
The problem for boat assemblers is a CPP requires understanding , and knowledge to be efficient.
They are trying to sell self docking boats to novices .
Knowledge is power , but todays boat purchaser prefers automatic to skills.
The CPP has been in use for at least 75 years on fish boats to ships , useful for thousand of hours a year folks ,
20% savings on a 200 hour a year boat for $10K?
Doubtful, as the install requires a thrust bearing , so it would be a difficult option.