I have "stolen" a breakfast at Leicester a couple of times in my trusty old Aeronca - sheer cunning instead of strategy worked for me.
FF - I'll be happy to do a stint as a defender in my faster machine next time if you like, I guess you code sectors and ensure that there is a continuity to the patrol? PS - thanks for Fri, hope I was contibutory and not just white noise!
Stik