So a Dec 08 and a Jan 07 should be tying skates? Or a Jan 07 to a Dec 07. 11 Months is a big difference. I suppose the child will tie his skates when he feels comfortable enough with his / her results.
Any 2007 should be on their way to equipment independence. The skates are better off not being overtightened anyway. Let him tie his own skates and stay out of the locker room. Honestly I think parents don't let their kids tie their own because they want to keep getting that last word in before game time. Time to let go, our job as parents is to raise a child that can go off and survive on their own, is it not?