Speaker vibration control device

I have a set of Monitor Audio Gold 300 speakers (59 lbs) and I'm interested in vibration control. But there are so many products out there where do I begin? First off my speakers sit on carpet in my living room (sub-floor is wood). I have rambunctious grandchildren who visit every 3rd weekend and when they do, I slide my speakers closer to the front wall to be out of harms way. When the kids aren't here I slide the speakers back out to their optimal listening position. Any recommendations for vibration control under these (mobile) circumstances? I've looked at Stillpoints but their cost is all but prohibitive. Also looked at IsoAcoustics and the need for carpet spikes was not appealing. I ran across Townshend Audio's seismic platforms and I think I'd like them. Anyone familiar with this product? How has it improved the sound of your speakers? MA Gold owners what vibration control product do you use and how does it improve the SQ of your speakers?