Feathering Prop for Outboard
Arne Johnson Boatworks makes a saildrive with a Honda outboard that uses a feathering prop. He said it would work on a Honda 9.9. You''ll need to ask about the Honda 8. Cost is, now be sitting down, $650!! Arne Johnson can be reached at firstname.lastname@example.org or website www.saildrive280.com
If you come up with anything else post it so others can know. Good luck.