Cool to see your group of fella's enjoying the Aerotow experiance it indeed is a wonderful experiance in itself beyond just the need to get the gliders up.

One thought on the very real difficulty in maintaining control of both aircraft as you gain altitude is a simple climb procedure we have worked out here and seems to allow us to climb higher.

Most RC pilots will tend to fly in a more or less rectangle pattern which is fine to a point. But we have found that left or right if the tug pilot will start a shallow turn roughly after stage center and never come out of this turn for the duration of the tow that this make thing far easier on both pilots for the entire tow.

This is especially useful the higher one gets when orientation becomes a problem. Relative position is controlled by the tug pilot simply by opening or closing up the turn as neccessary to maintain position during the climb.

This technique also make it easier for the glider pilot use the ability to track just outside the big turn more or less to maintain a good tow tension and avoid whip lash.

Here are a couple of shots of some dollys we use that I make up both land tow and water tow. I also added a link here of a tow using my current tug a Great Planes Stearman towing the Oxy Moron a bashed Seniorita for a aerotow trainer that also serves as a twin engine trainer its a quick change artist.

http://www.youtube.com/watch?v=wwXN8Z2inyo

John