the genereal opinion of most of the people who dune all the time and from people i trust. skat trak paddles for the rear(lumberjacks) and smothies for the front. The smoothies have texture to them and do grab. They also allow you to float and slide versus mohawks or something like that. Do not buy itp paddles for your utv. You will get smoked period. The number of paddles is up to you depending on power etc...however rpm's are more important than anything else. so actually better to have fewer than too many paddles in my opinion. Many threads on many forums on this issue.