I managed to get ahold of one of the guys that runs the pulls. If you're going to pull you should be there by 9AM, I'll probably go a bit earlier just to be safe. The pulls run from 9AM to 5PM. There is a separate diesel class and many other classes as well. Sounds like there should be a good 100 or so trucks pulling. I'm not too sure on all of the rules, but I'm gonna pick up a rulebook when I go. The address of the fairgrounds is:
200 Pine Hill Rd.
Westport, MA
Sean