Even if they are handicapped by their own relative ignorance of the sport they coach. If you are in as an assistant coach for the JV team you ought to have access to any level of the program. In that case focus on improving things proportional to the trust you feel you are establishing with the HC. There is a lot that you can improve as she comes to trust your recommendations. If she doesn’t do a great job the likelihood is she just doesn’t know what film study, extra reps found via Club Soccer involvement and what the implementation of program fundamentals down to lower levels can do. If you are involved you can make things happen but the speed of your implementation ought to stay directly proportional to the trust she has in you.