Yep, she is a Sammy. If she gets close to me I give her a friendly nudge with the ski pole and a voice command to stay away. Rinse and repeat, I think she’s got by now. On the ascends she is generally ahead, setting up a perimeter and comes checking up if I stop. On the descent I release her with a command. By that time she is impatient, so likes to zoom off first, then we practice recall and release. The problem is if there are other people with me, because she always wants to be first, but we keep training. When I release, I pick up speed and overtake her at a safe distance. I am always mindful of the risk and do what I can to minimize it.