I am not saying you have to talk to coach A. just hang out at practice, with all the dads. Observe. you might have had an argument the first three years, i agree. but he has change things the last three years and is starting to get results.you cant have an argument if you are not willing to see what is going on. now if you spend some time, not just one practice but quality time and dont like what you see, then yuou have an argument.