The problem is that the 'proposed' fence is anything but frangible
612 VGS operated at Abingdon for 18 years with an 8 foot high Army security fence (and very solid steel gate) across the runway which reduced 08/26 by a quarter and it was never hit by a glider (and that includes 1st solos). Mind you that can't be said about the sheep fencing on the airfield or squaddies cars, although technically the squaddie hit the glider not the other way around.