Visibility script help, please!

Does anyone have any suggestions as to how I would use the visiblity script to control multiple objects? Right now I have the script assigned to each object separately that I want controlled. The problem with this is that the performance hit from using the script multiple times is outbalancing the performance gain of hiding objects. As usual I am probably going about this the wrong way, but I am trying! Thanks.

TorQ

I ended up using the visibility actuator (which I just discovered:)) tied to some near sensors and that seems to do a good job.

TorQ