I have some medical training and would stop and help someone to the best of my ability. One thing that has not been mentioned is that you don't have to give the person your name if you do help them. You also don't have to give your name to anyone involved in the rescue or to any dispatchers etc. Remain anonymous. This will lessen the likelihood of you being sued.

If they don't know who you are how are you going to be sued? Just one more reason I don't feel like signing a trail register. I also hate places that require a permit.

I don't even think I would tell the person that I've been trained.

Help them out, get them rescued, and leave.

As a friend of mine would say "Shoot, shovel, and shut up!"

-Skippy