[ChrisNZ]

With you Chris ! To complete the package all you need is to place the mirror below the gound -on plane -i.e.just move it back down the long red line so you can make sure you are on your true plane and not hovering the club so you don't break the mirror!.Good stuff

Below ground - yes! Technically the mirror could go anywhere on the long red line, you'd just have to change the angle of the mirror, but the best place for it is where your eyes usually look during a shot - the ball. Ideally then, you'd want the half of the mirror closest to you under the ground, with the mirror angling above ground on the other side of your plane line. For practical purposes though, just above the ground is fine. Just make sure you use a short club or grip down!

Chris