Ran into a racer at an IJSBA Qualifier this weekend that was using these but I did not get his source. They looked really nice - taper makes a lot of sense - you really cant grind old ones down - so, who is making, or made the original 3 degree tabs? I am OK with my old &D for Rec riding but if I race next season I also need the 3 degree ones.
Generally a racer does not want 3 degree. He needs to keep the nose down and therefore the pump engaged. There is only a 1 mph difference between the two and you never have flat water and time to reach top speed in a buoy race. I know guys that used to put nickels under the 3 degree versions to keep the nose from flying up. Others like them, depends on the brand sponsons, intake grate and how they may have trued the hull.