Brad, I wrote, in matter of " kids lifting ", no loading spine exercises.
And for kids from " rural backgrounds ", because not enough qualified for kids,
wrote, not sure...
Not easy to know what you are looking for at reading your first post and thanks Pavel, everything was more precise.
Good to know you are doing speed and agility drills, you can increases the difficulties of theses drills with a weighted ball and drills are worked with a partner, but you could know that already.
I don't have any doubt on your goals with your team, I just try " to help ", if I can, so must begin by " the basics ".
I don't your qualifications, you are certainly a tactical coatch in American Football.
Despite a lot of posts in this forum against " sports studies ", today, thanks to the sports scientists, sports specifics training programs can be designed to enhance athletes performances, and this is the job of the " strength and conditioning coach".
I understand also that in high school, the tactical coach is also the S&C coach.
I don't grew up in a ranch but with 3 older brothers, so also did a lot of " unsafe " exercises, and I am also fine, luck ? Don't know...
Today, I am very focus on prevention and creation of a safer environment for participants in sports and physical activity.
But I am not always applying the same rules for my own training !!!