We've had too many SKS' & AK's slam fire at our club's range so we have the one round at a time rule too. An errant round over the berm could get us shut down.
I can sympathize, especially since they've made it illegal to shoot on most public lands now. It is just a sad reality due to western Washington's growing liberal anti-gun population. Bothell is too close to Seattle's vile shadow so I'm sure Kenmore is feeling the pressure of unfriendly onlookers.