Tom / PM
Does this leave untouched the parking lot closest to the trail on which you return from the base of the expert area to the main base? The reason I ask is that it was often possible to find very close-in parking in that lot, hike up the little hill, and ski down to the main base area.
That parking should still be there, although I'm not 100% sure. I believe the tubing area is further away -- the bus parking and maintenance buildings are pretty far out. The tubing runs were probably cut into the mountain to the right of the trail (as you face the mountain) that goes between the bottom of the three expert's and the base area.
Of course, it's possible all the tubers will park in our secret spot now. (Well, probably not -- I'm sure there's plenty of parking closer to the tubing area.)
As we suspected, the tubing park is on the far right side of the resort -- a bit of a hike from the main lodge, but the tubing park has its own lodge and parking area.