I remember well using the stick technique with my Jantar-1. As the
glider starting moving, the wing fell onto the ground with a thud,
pulled me off the runway and I only just managed to avoid a ground-
loop by aggressively using full rudder and aileron.

A later similar attempt in my ASW-20 wasn't much better. I now refuse
to try a field retrieve with my present ship without a wing runner and
think the stick-on wheels are a great idea.

Mike