No Parent Policy

My kids are in Swim Squad at school. We pay a fee for this privilege. We drive them to 6am sessions, and pick them up after training.
Today I tried to spend five minutes poolside admiring Rex and Bea before going on to a parent teacher meeting.
I was asked to leave the pool.
I was told: "We have a No Parent Policy at all our training sessions; in the past we have found parents have interrupted coaches during sessions and disrupted the training for all swimmers. Their focus quite rightly should be on the children and they should be able to coach without interference from the sidelines."
After I got over feeling hurt and insulted - I began to wonder if I should adopt the same brutal attitude to the pony club mums who stand paddock side shouting superfluous instructions during my teaching sessions? It would certainly make my life easier.
But then I realised the loser is not the mum but the kid. Kids love to see their mums watching - my two were trilled by my five second appearance - just enough time to wave to them - when I picked them up Bea asked: "Did you see I'm diving much better?" and Rex said: "Do you see I was the fastest in my lane?"