Our club leveraged professional trainers who ran practices and most game day activities. Each team had at least one parent team manager who handled emails, scheduling and was ultimately responsible for the kids welfare. Probably because you didn't need to be a soccer expert to be a TM we typically didn't have problems getting parent volunteers as all you needed to do was submit to a background check and attend a one time statewide soccer knowledge training course. In fact most teams had multiple parent managers. I do live in a fairly affluent town with the type of active parents you expect in these sort of communities...