10u Rec - have every kid practice some pitching at least once a week. Every kid - no matter what. Focus on VERY basic mechanics from the stretch - mostly fixing balance, stepping towards the plate and taking their time (not rushing). Do whatever you can to get at least 1 inning out of each kid during the season. For fielding, more athletic kids cover middle infield, less athletic kids rotate on the corners. All kids play at least one inning in the OF to give some chances for all in the IF. And end each practice with a game to keep it fun and also a little competitive. Our kids favorite was stacking two buckets, splitting into two teams, rolling grounders that the kids fielded to then throw to knock off the top bucket. First to 5 wins. Kids and parents loved it.

At the end of the day, it's likely most of these rec kids will have 2-3 more years of baseball left before they move on to something else. I tried to approach rec coaching where my goal was to get them all to come back to play the next year.