Hi, Knots,

You didn't specify if you were looking for more speed in Formula, general or speed sailing.

For Formula, you might consider Deboichet, but they appear to be unreliable in their contact with customers and their delivery. You might consider F4 at f4fins.com/

For general, Tectonic is just as good as anybody and you might also consider C3 at www.c3-fins.com/C3_web/home.html.

For speed, you might approach C3 to see what they offer.

Hope this helps.

Have a look at TimeMachine and Ka for speed fins