I use an air bladder bought from Amazon that I pump up (squeeze bulb) to lift a corner, then either remove the spike and put furniture sliders underneath or install the Herbies gliders under the spike.
For heavier speakers and alot of moving I would remove the spikes and use the furniture gliders until you find the spot and reinstall the spikes again with lifting them up with the air bladder.
You will need to lift all for corners separately with the air bladder, but it works very well.
ozzy