the non-stick zip tie tickets are even easier.
I've only done it on vacation to get a few more days skiing in that what ive budgeted, and its never been an issue. At some of the bigger, more crowded CO resorts it took about 15 min max to get a ticket for free. Smaller areas offering a beer or $5 will work just as fast.
But remember when youre doing it you are reaalllyy hurting the ski area. They survive on lift ticket sales. So if your doing it at keystone, i wouldn't feel too bad, but maybe at say Sugar Bowl, you should try to find a way to pay for it.
Also it easy to do basic research before hand. If its some high tech 100% RFID shit, youre probably fucked. Find the area with the easiest tickets for the best results