you know the kill switches are rated to only so much before the blow out, so if you have a complete short after the kill switch, it should blow out before anything melts. Plus, on a bad day your starter could blow out a several hundred amp fuse just from cranking. I think thats why kill switches are required... What I'm saying is that you cant really put a fuse b/w the battery and starter.
And my kill switch its pretty ghetto riged. But it has worked fine for the last 3 yrs. I'll post pics of my setup in the next few days.