We're working in it; hopefully we'll have an answer soon. Much is depending on the completion of Monticello's permanent facilities. Keep your fingers xed. As for other camping options, I have no idea.
I stayed at the Super 8 in Monticello when I was there. It's only a few miles from the track, clean, quiet, and inexpensive.
Walmart Supercenter Store #2547 41 Anawana Lake Road Monticello, NY 12701 (845) 796-7202 Looks like only a couple of miles from the track off RT.17