Some issue I have seen as a coach and experienced myself while coaching for non-for-profits and schools would be the anatomy education in coaching and sports and also in such organization at least in the USA the coaches might not have knowledge of the game but they volunteer because their child is interested in playing the sport. Usually, coaches will have a high technical and tactical understanding of the sport and understands the long-term injuries in the major muscles that are used in the sport, yet when it comes to scheduling practice, usually in the schedule it is; warm up, technical skill, tactical skill, and applying those in a scrimmage. It can differ from what I read in the books.
Coaches in small organization do not have the education nor the time nor facilities nor budget to also become nutritionists nor get more personal with different specialty, in more popular clubs that focus on sports there is a person(s) that are responsible, for nutrition, conditioning, fitness, attacking, defending and goal keeping.
In grass roots and small organization sports club there is just no enough man power for that. Hence there is no time to develop with player a nutritional guide, nor a gym/physical routine other than what is done during warm ups and cool downs pre-practice and post-practice respectfully.
The books speak of complex topics that from experience does not exist in small, non-professional, and I believe nor semi-professional organizations/clubs. These topics even though they hold truth are just not realistic to accomplish by one person and might not be accomplished due to the size of the organization and the funds they have.
This is an issue because it will cause one of the following; If the head coach focuses on nutritional facts and gym/physical routines, there will be poor movement abilities and poor skill development. If coach does not focus on the physical routines and nutritional facts, there will be a lack of proper fitness.
Also once players are away and alone we cannot control what they do or eat, this is developed on trust but how to monitor players outside of sports or outside of the session? Also, this will feel like controlling a player’s freedom. The minimum we can do is set some guidelines and hope the players will follow some of the guidelines.
The way to solve this probably will be the investment in getting a sports scientist and a sports nutritionist like larger clubs would have. The likely hood of this happening in small, non-for-profit organization is highly unlikely.
The other issue these days is the lack of usage of young players. For example; in the past I remember when Manchester United the English football club had Wayne Rooney, Ryan Giggs, Paul Scholes and they had players starting competitive football at ages of 16. Now days seems like focus is more on winning and marketing than the development of youth players, rarely if these youth players rarely get to play in a professional competitive matches. If we only focused on the players we have now and winning, well players will get old and retire and we will end up with a club/national team that needs to rebuild and find talent. similar to what has happened with Man united, Barcelona and currently R. Mardid.
I believe a simple solution for this would be a gentleman’s agreement that in league cup matches a maximum of 3-5 senior players can be selected and majority of the team are composed with youth players. This way they will get some good competition and play along side senior mentors to develop.
There are probably more issues that I have not identified but I have identified from my experience and what I see in competitive football in Europe.