At our first qualifier of last season we didn't make it through the first round of inspections for a few reasons, one being that we didn't have a clear 'Main Robot Power' label. After that, we made this, and it's used on both teams' bots. Here's a cool little placard that you can locate next to your switch. It uses the same hole pattern as the Tetrix channels.Fill ratio varies to your preference, but I think ours was ran at 15%.