banktoturn,

Are you suggesting using flaps and elevator similar to control line stunt planes and current rc fun fly planes?

This would decrease the radius of the turn but with all those surfaces deflected wouldn't the plane really slow down? Not to mention the higher A o A.

One of the keys to success in pylon racing is knowing the limits of your airframe, amoung many other things. I'm basing this on some q500 experience. One of the problems you commonly see is guys have their elevator travel set to high, they pull full stick trying to turn as tight as possible, the AoA goes up and the wing starts to stall which causes a decrease in speed.

Ideally you want to give just enough elevator to turn without losing any speed, and still make a reasonably tight turn around pylon 1. I set my elevator throw to this "sweet spot" when the stick on the tx is all the way back. I believe this is the fastest and most consistant way around the course. It also helps to have dual rates, you will probably need more elevator travel to land. This also applies to aileron travel as well.