Well only tell the truth and the track is the main problem, coupled with the curfew is a sure fire disaster. At least a negotiated 15 minute extension with the council in the event of the ambulance coming on track should be sorted and in the first instance the air fence should be extended further round the exit of bend 1 by at least 3 sections.
Going back to Canterbury days we used to have a 2 hour curfew, 18/20 heats of racing, nothing cut short, a 15 minute extension for an ambulance coming on track and 2 Ambulances always in attendance, nuff. said.