Thank you all for comments
jjj - I did give it a go awhile back, but found it too fiddly (person of minimal patience), but will try again ... for you
Trevor - we have had a big year up here for IYA, with the public coming to many events, and also getting a quite a few new members to our group.
Good luck in Bendigo of your talk (my home town)
Dave - its pretty much point and shoot ..... with a couple little alterations

. If I can do it, anyone can