Yesterday on our trip to the hardware store I spotted a gizmo I thought might come in handy for threading/sleying. It is a hand's off light that hangs around your neck. For less than $15 I figured it was worth buying and if it didn't work for me, Doug could probably use it in his workshop.
The light at The Spinnery was pretty good, but it was hard to see to sley so I whipped out the light and voila! It really did help.
Guess this will remain in my weaver's toolbox after all.