Originally Posted by former_racer
forgot to put this in the other post... Atomicman-they are not actually the same ski, the flex is quite a bit different. Atomics are also well known for making the lines very specific to event. It also depends on the ability of the girl, and the coach as to whether she's learning to crossblock. Some coaches prefer to teach tight lines and crossblocking to J4's and the J5's that are really good. My former coach came to my team from the Women's World Cup circuit and was against women under 13 running SL because it's bad for their hips. He obviously allowed all of us to still run the courses, but there is no way he would have let us do it on skis intended for a GS course and vice versa. It's not the dimensions that are as important as the difference in the flex and the way they are made. The SL skis are designed for quicker turns and the GS are designed for wider turns. If a racer uses skis too bid for the SL the results will not be as good because it will be more difficult to make the tight quick turns. This can also lead to bad habbits that the coach will have to deal with next year. It's just not worth it to use GS skis on SL courses.
I know all about flex and certainly understand the difference between a SL & Gs skis flex. I have 2 boys that have raced for years. I think you are getting way to wrapped around the axle about an 8 year old soon to be 9 that weighs 75lbs. You sound like a little league parent for god sake.
Come on! Crossblocking for kids that age does nothing but cause lots of rotation and reaching. Most of the kids ski around the gates in slalom just like in GS at that age anyway. if they are trying to crossblock they are skidding their turns even worse than normally.
She only weighs 75lbs and is not even 5' tall. Again year before last my 170lbs. J3 14 year olds skied SL on a 150cm SL11 and GS on a 170GSX. This girl weighs 75lbs. pounds.