If not too difficult to move, move into a safe position when not listening. You must be not listening for far more time than listening. I do this for my 3rd system where the middle surround is in an open plan gap between rooms. It is not onerous without spikes and on a carpet. Btw the new B&W's are on castors and they say this has no adverse affect on sound. It becomes just a part of the ritual of sitting down to listen - in the same way I have to switch on when I sit down the tv, pvr, and processor. I use a logitech to do all 3 at a press of a button usually but they still have to fire up. Whilst they are doing that, moving a speaker 2 or 3 feet is not time consuming. I have a lab and a German Shepherd rescue that has no idea what damage joyful expressions can cause! Dogs have no idea what size they are ...! And btw training a self interested rescue German Shepherd does not take 5 minutes, it is a project in itself.
Another one of those strange things with dogs and hi fi is that considering their hearing is supposed to be top notch, how close they lie to loudspeakers when I am playing music!