Yep, I have had to be "the bad guy" on my knees more than a few times!!
They are all pretty good kids, all things considered, and as usual, have differing levels of ability. Our littlest guy still gets his lefts and rights mixed up, but he is willing to give anything a fair try. We're still trying to get the biggest one to remember that kicks involve more than just lifting your foot quickly. But they make me think about what I am teaching them, and that can only be good for me.