You can always troll the parking lots for lift tickets. Look for people that seem to be taking off for the day. Offer them $10-$20 for their lift ticket (if it is for that day of course). Then you are set. Technically this is not legal. So I would pick up some of the zip ties for said lift ticket first, instead of walking up to the window and putting your ticket on.
And to expand on that... once you get passed the lifts on the front of the mountain, you are all set. Just don't go back down to the front until you are done riding for the day.