Former competitive skier and still avid skier - never patrolled though. A friend of mine patrolled for about 5 years, however, and then decided he wanted to go into medicine. I think applying as a former patroller would be a major asset to your file since it's so unique in terms of premedical training and would likely stand out amongst the standard premed routine. The motivation behind your desire to practice medicine would also likely be a lot more clear than some of the rhetoric that you hear from typical premeds. This friend of mine ended up at Dartmouth - I would guess that his success had a lot to do with these things. He was relatively successful academically of course...