: A question: When
: stripping an area that's a little concave, and trying for stapleless
: technique, what's the favorite way to hold the strips onto the forms?

If you still have it, the waste from cutting the form could be clamped on top to sandwich the strips in place. You could split it at the centre line and hinge it from the form on the bottom so one clamp in the middle at the top would hold both sides. If it is between forms, a wood form roughly the same shape would work. Just put in wedges to put in the amount of concave needed.
good luck
don