Firstly, ensure that the SP has been fitted correctly.
(fitting instruction are packaged with the SP and available to download here).
Gun down shooting
Set up as normal. As you position the gun, you’ll see the SP with your shooting eye but not the other. It isn’t important to see it once mounted.
Always focus on the clay – never the gun. If the SP is in your peripheral vision, it’s working.
Keep both eyes open throughout the shot: the SP will ensure that your brain chooses the real image from your shooting eye and isn’t confused by a peripheral image from your other eye.
Familiarise yourself with seeing the SP in your peripheral vision but don’t look at it directly – it isn’t a sight and shouldn’t be used as one..