there's been some posts on this so you should be able to find some good info. I would steer clear of cashier, guest services, or anything dealing with the public, or where you would have long stretches of boredom, looking at other people having fun. Cooking is a good option, especially since you can eat for free for at least a couple meals during the day. liftie isn't the worst gig, depending. Most guys I know take runs throughout the day, not a bad deal. Plus you get to know people (ie, cat or snow machine rides in the am for first runs).
One thing to look for is a position where there will be lots of people doing the same thing as you, so you can take breaks to go riding. And make sure you find a boss willing to let this happen.