Give it a try, Rick, it works well.
I can take zero credit for it, it was just one of those happy accidents one day. When daylight lighting I used to use a little 150w HMI that I home-built for a back/hairlight... but it was a royal pain in the rear because it was the only instrument that wasn't hot-restrike and no matter how much you preach DON'T TURN IT OFF somone inevitably does when moving it, leading to a 15-minute wait (and yes, sometimes it's me who forgets). So now I use the key instrument in back a lot. It of course gives a bit of a harsher/sharper output, but if I put it a bit to the side it can give a nice hair and side-of-face and shoulder spill... if I have any windows in the room that can justify its origin then it looks like a sunlight spill and works pretty well.
Come to think of it, about half the things I know how to do I learned by accident. The rest, from watching other good gaffers and cinematographers like yourself back in my former wannabe-actor days. From film school? Ummm... zero. Thanks, Higher Education!
T2
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Todd Terry
Creative Director
Fantastic Plastic Entertainment, Inc.
fantasticplastic.com