BACK TO BASICS
As Victor Meldrew would have said "I don't believe it!" Well, actually I do, but I am prompted to ask if anyone has asked an Air Cadet what he/she would like to achieve on a gliding course? I' d say "to go solo/gain his/her gliding wings" - BGA A&B standard. I'm sure an Air Cadet would be happy to do that in the most basic of aircraft and wholly in the Circuit.
So, solution to dilemma? Sack the existing staff and contractors and acquire some second basic gliders and get the cadets flying again. Leave jollies in powered aircraft for Annual Camps - or are they now out of fashion? (Seem to remember night flying with pilots converting to Hercules at Thorney Island, handing out sick bags - ah those were the days ........)