Check out Propgods.com . . .
http://www.propgods.com/content/about_us.aspx
My favorite two seacraft props are the Mirage "Plus" and the Highfive. There's an hub kit (from Merc) that will allow your motor to run the MERC props.
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PROPGODS.COM - About Our Company
Prop Gods LLC was started by Jody Carter and Ken Reeves in Sarasota Prop Gods, is a mobile prop testing service, and prop retailer. We will provide you with the best service available and help you choose the best prop for your needs. We offer a wide variety of mercury SS props for you to test at a location of your choice in the area..
In our opinion, Mercury is the leader in prop technology and has a wide variety of props available for a variety of engine manufacturers. We have been involved in boating for many years and found prop selection to be one of the most important choices for your boat.