When working on a film project, how do you organize your sound effects and Foley when it comes to tracks?

For example, do you have a different track for each character’s weapons, or do you allow them to share a single track?

What happens when you’ve designed the sound of each weapon and you have lots of different plug-ins/settings for each individual one? Do you automate them on and off as needed in order to use as few tracks as possible, or do you just have a different track for each?

In essence, do you allow yourself to have loads of tracks, or do you try to be really economic, even if you don’t really need to and your computer/software can handle it?