Having two little ones just a few years into boarding and skiing, I have spend a considerable amount of time on the intermediate runs at Crystal/Alpental the past few years. One of my pet peeves is when kids que up on the downhill side of a rise where you can't see them until you are on top of them. I have no problem asking them if their parents didn't teach them not to stop on the lower side of a rise where they can't be seen from above. Even if they give me the glare, at least I hope they think about what I said before they get run over.
And yes I do sometimes think about riding when it's winter and boarding when it's summer.