We have a simple sportsman tree on our website at Great Lakes Dragaway
GLD Sportsman Tree
You may also want to check this link out:
The Starting Line Homepage
This site has a practice tree simulator that you can buy and download, what's nice is that it offers a LOT of options, and can be downloaded to your laptop (assuming you have one!) and you can practice on your laptop while waiting in the lanes at the dragstrip or in your trailer. It's a pretty cool program, offers as much functionality as the ones by Biondo, etc. but it's only 39 bucks. It keeps track of your average R/T time, frequency of redlights, you can set rollout, delay, etc etc. Even has sound (kinda silly but still cool!)