No problem. Got my own "oops" -- I've watched Bill set up and pack up countless times and somehow blanked on the answer. From his email to me about this:
I have never had a problem with it. On the bounciest of stages there has occasionally been a little difficulty playing because of the instrument moving, but I have never worried about it falling. Perhaps it is because it's not on a separate stand. I have the Dulcimer Strings three leg stand where the legs screw right into brackets attached to the bottom of the instrument. It has a big footprint (that's a different problem on these small stages), but it is very stable.
I guess that does make it hard to knock off its stand, and that big footprint makes it unlikely to tip over.
Re: technical question