I coach 3rd and 4th grade players. They are 60 to 80 lb. players, most have played before. My problem is, they don't seem to be physical enough to kick the other team's butt. They do ok, they are fast, and most understand the game enough (for a nine year old). We do King of the Pit, Bull in the ring, and some Oklahoma, but only the better players step up in these drills. Any ideas? Anyone? Thanks.