It's best to start by switching to white light to run the dog. If the dog is one of those that realise they can still see a bit in the red you can start to switch for appropriate short runs, especially on squatters. To begin it needs patience as it's hard to tell if the dog can really see the rabbit. (He can smell it)
I find juggling lamp, filter and slip awkward so mostly don't use a filter. Has anyone a good hinge system for the filter?