Son is a great wakeboarder, and no troubles at all getting up on two skis. Now has decided slalom is "cool" and wants to learn. Anything I need to know in teaching a kid that may differ from an adult, which I suck at by the way? Good skiier, bad teacher. I understand the head up, back and arms straight thing, but any other tips for the little guy? Don't want him to get frustrated and give up. Thanks for the help.