Red filter can work but it can also make it harder to see the detail especially for older eyes . Reduces the range capability of the spotlight .
The mistake that some new shooters make is they keep the light on the game constantly so it can scare it off a bit .
Once you spot a fox keep track of it but don't hurt his eyes with constant light all the time , move the light on and off the fox until the shooter is ready and then put it full on the fox. This also helps pick up other game that may also be in the area when you move the light off the fox .
Also helps to confuse the fox as to wether he has been seen or not . They are very smart .
