I'd narrow it down to this:

Custom Homes
Backup Generators
Troubleshoot, repair, upgrade, (retrofit?)
Remodel & additions

If you really want to do more than what people are suggesting, maybe put your essential info bigger, and centralized for the driveby, and list the other stuff off in the corner for people to read at a stop light. If I'm at light with a truck in front of me, I'll read as long as I'm sitting still out of boredom. Although retention in another thing.

editted to add:
After reading your last post, I can see that is what you are doing, the important info front & center.

[This message has been edited by Jps1006 (edited 09-24-2004).]