VGSs already increase delivery during the summer and Easter by running continuous courses over the period. But I agree that this could be ramped up to maximise utilisation during these periods. If say an average of 50 gliders could be made available over the 6 week summer holiday, and 4 GSs completed per aircraft per week, you very quickly complete 1,200 GS - very close to 50% the annual target for the entire organisation. Replicate that at Easter - potentially another 2 weeks as well as half term holidays, you see how you could maximise the delivery of training in the most efficient way possible. But this would need investment - particularly for staff. You would probably need 100-150 instructors.