In our area we would hoop and hollar when we came up on a slower rider. A quick blip or two of the throttle works as well. Be sensible though wild free reving, or hollaring like a mad man only makes an already nervous rider even worse, then he takes himself, and you out. When they pull over thank them, its polite, and it will make them more willing to do it for you at the next race. Track ediquite is very important, its the difference between fast guys getting by you, or Putting you on the ground(or worse a tree :eek: ) because you wouldn't get out the way.