Hey txrookie, I've never heard of the motion thing but I have heard of people wiring a dimmer switch to their solar powered or battery powered lights. They have the switch inside their stand where they can control it. They wait for the porkers to show up then they ever-so-slowly turn up the light until there's enought to shoot well. You could probably rig this up for a lot less the $60.

Just another option for ya.

TXMM