In answer to Pete Stratten's original query I think I have the, or at least
an, answer (I initiated the other thread). I've put a package together- see new thread
http://www.pprune.org/private-flying/456376-gliding-package-ppls-ridgewell-essex-suffolk-border.html#post6550755.
If this wouldn't work for you (done locally, of course), tell Pete what's wrong with it.