So when a glider is hill-soaring the Black Mountains, probably below the tops, how does that help in avoiding a Jaguar.
I suppose you could say they shouldn't be there or they should be flying where they can be seen, but that rather defeats the object of hill-soaring.
A better bet would be to stick a Jaguar pilot in a glider from Talgarth and let his mates loose in the valleys to see how it is from the glider pilot's perspective and how well trained soaring pilots are.