Crossfit is the absolute worst training for athletes. Athletes bodies aren't built for muscle burnout each and every workout.
Im with you I don't think Crossfit is right for what we are doing.
Core exercise is very good , repetition is even better. Real drills that mimic actual play is perfect. Stamina is key.
Similar to Martial Arts they teach Technique Strength and Stamina, Soccer is very similar .
Technique equals touch , A good player needs Touch first IMO. If you kid is constantly losing the ball when its past to him/her, work on touch, period. If you child cannot trap a ball, be able to pass on awkward angles, complete good pass thru pass, then you need to work on touch, nobody likes kickball and we see it a lot , even in Flight One unfortunately....
Strength to be able to body on the ball , break thru defenders, can come from core exercise and lots of practice and training, they are working their muscles intensely ,(As a parent are you training 3-4 X's a week?) no need to lift weight just yet, Im not against it but still their building muscles daily on the pitch. When the kids are shoulder to shoulder , the stronger more aggressive one will win especially if he/she has the touch or Technique to control the ball at higher speeds...Leverage , Body Control, Strength all that is important.
Stamina , obviously come from a lot of practice, playing time , training, etc...... Our coach runs the hell out of our kids and they rock, they are definitely a first and second half team, their rarely ever tired and in the second half when teams are gassed , their just running circles around them
You want your kid to stand out make sure they never Run out of Gas, have a Good Touch, and has Decent Strength to battle thru on the field.....it will come , they just need the dedication to be better, if your kid wants extra training, do it! Or better yet go out on the field yourself, with them and have fun, work hard as hell, but have fun.
just my 2cents....