After reading all the methods that have come about I have had quite a few
chuckles. But one thing that comes to mind as an idea might just really work
and has some possibility. I would assume that part of what makes the bulbs
easy to steal is that they are cool to the touch. If the bulbs heat up fast
enough you could install a system to sense when somebody is near the field
and light up the bulbs. Then they would be hot to the touch and it would
discourage theft.

Another idea is that if there is a particular night that is more prone to
theft si out with a spotlight and hit the would be theives with a high power
spot light as they enter the field. This would rattle some of the petty
theives and discourage theft as well. Seasoned theives would not be easily
rattled this way, so you could combine this with video tape and play it to
the proper people.

Kirk Wood
   What4@concentric.net