Here is the practice tree that Rocky Jennings and I went halves on years ago...

We got it from either Jegs or Summit.
It came with buttons that you can control by hand to simulate a car with a trans brake, but we ended up making these two practice "cars" with micro switches on the clutch pedals. Also, we set up our cars where as we could plug in the tree to them. Practicing on this tree, using my pocket practice tree, and coming up with a routine all helped to be able cut better lights!
