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I think the original question was addressing the brand of hydrofoil more specifically than the model of boat. My reply was based on my hydrofoil experience and my boat model was only included as a basis for comparison.
A Dauntless 15 with a Mercury 60 should be good for what? 37-38 MPH?
With its 1.83:1 gear ratio and 6000 redline, you would make good use of a 11" or 12" pitch propeller. The gearcase on this motor is a class "C" size meaning it has a bullet of approximately 3-1/2" width so uses a propeller with a 3-1/2" diameter hub.
Mercury does not offer much. The 11-5/8" x 11" or 11" x 12" Vengeance is it for stainless steel three blades. There is also a 10-5/8" x 12" Trophy Sport four blade I have no experience with.
PPI offers under their Turbo and Stiletto brands two models that might work. 10-1/2" x 12" Turbo Hot Shot/Stiletto Triad or the 12" x 11" or 12" x 12" Turbo Pontoon 1/Stiletto Star.
Regardless of propeller is chosen, if your motor's A/V plate is even with the keel now, the motor should be raised one, if not two, more sets of bolt holes.
