If I was cooking burgers on a grill with a 20 year old standing next to me the last thing I would ever think about having to say is "Don't lean up against this grill while this meat is sizzling." Kinda the same sort of thing being discussed here. If you think a third base coach needs to be constantly barking at a player at the highest level of collegiate baseball about not leaving third base on a walk with only one other player on at the time, then I don't know what to say.