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Mr Doelscher invented the hydrofoil. The others are reverse engineered copies. In actuality you could bolt a piece of flat aluminum to the motor and get similar results.

The expensive ones with fancy curves and such are merely advertising hype.

Doel makes only 1 model, though they used to have different colors years ago. The best price is on EBay with free shipping and no sales tax.

http://www.davisnet.com/product/doel-...fin-black/