Mounting to the tank is probably the least amount of vibration you will get (unless you then mount it to a tank bag as some have done). Mine clears my tank bag fine and doesn't interfere with anything. Just take this into consideration before mounting to the tank. I like this location because it is not in my face while riding. I tried the handlebar and didn't like to constantly see it in my field of view. It is angled up a little and you will sometimes have glare off of it when it has direct sun on it from behind you. I think they all get this at certain times and angles.
I used 3/16" x 2" x 18" steel stock from Lowes to make it. Do a rubbing (paper and pencil) to get the bolt pattern of the tank onto paper. Then draw the shape you want and transfer it to the steel. Then I used a hacksaw, file, and drill, and sprayed it matte black. I bought longer (25mm?) hex bolts and intended to change them to button head allens but never did.
