Much less flying sites being lost, due to noise,and new sites opening up in locations that are not suitable for "noisy boys and their toys".Also in our location (and others that I have visited), there is a rule about running engines before a certain time in the morning ,( to respect the rights of any close residents), but those wishing to fly electric can go ahead and fly earlier,thus easing the congestion that occurs in the morning before a contest , when everybody want to get in one practice flight .Keith