Players should be looking to improve their individual skill set in the off season. As High School soccer is a short compact season, it is important that players develop their individual skill as much as possible in the off season. Those players who are on club teams will I'm sure will have this training in place. Those who are not, you can still improve with time on your own through the winter, spring and summer. All players are encouraged to improve their skill and that can only happen with practice time.
Good video on how we will look to overload areas of the field with creating the 2 v 1 situations. You will see that backs get forward, wing mids get forward and or inside and Central Mid's also go wide. Runs...create space...recognize that space...and play into it.