I need one! After only 2 races at Pocono my new pucks were wasted, the right one through the velcro patch. Damn these things ain't cheap.
Talk to Audrey from www.sliderwoman.com and tell her Jeffy sent you over, she'll give you a great deal on the ARI pucks. Pick up a pair of the Ari's, they'll last you FOREVER!
I went through the 'stock' pucks of my new Fieldsheer suit in 2 races at Road A. The ARI's last me a whole season.
My Dainese pucks cooked out pretty quick, but I have had good luck w/ Klucky Pucks. My buddy said he has had very good results w/ Trackpads (Kinetic Research Inc).
Layer upon layer of duct tape sorta works, if you are in a pinch
My buddy gave me a set of new Vanson pucks at the track and they held up a lot better than the "boomerang" pucks I cooked in 2 races. I'll have to find the knee puck woman next time just so I can see for myself.
the pucks from intuitive racing (www.inturace.com) are really good. They last quite awhile and have good feel