True but bound to cause friction and doesn't stop it happening in competitions and matches either. The thing is they know they are slow but seem unable and unwilling to change. I don't see what the club can do to re-educate them and surely imposing restrictions only runs the risk of losing them as members. It's a tough one to strike a balance
If they are causing problems and holding the course up on a regular basis the club should be addressing it as it is affecting everyone behind them. There is no excuse if they know they are slow but doing nothing about it.