I borrowed a brand new set of 20-10-10 11 paddle Extremes this last weekend at L.S. for Spring Break. They worked great for draggin, but I felt got a little too much traction for overall riding. My swingarm is only about 1/2" longer than stock, and I weigh about 165.
I think I will go back with 10 paddle Hauler Extremes, my last 2 sets of regular haulers had the crappy paddles that cracked and flew off.