Besides my Renegade, I also have a 400EX that I ride at the Dunes. Generally the more paddles per tire the better traction. Straight paddles are best for drag racing and V shaped paddles are better tires for playing.
The more paddles the more power it takes. Sand eats alot of power. I have used both straight and v blade. I prefer the straight 8 blade skat traks. Front runners make a huge difference in steering too.