Thanks again to everyone for the kind words.
I felt that we needed to Golden Retriever proof the SoundScapes (they seemed a little wobbly on our carpet which has a thick pad underneath) and also make the SS8's easier to move around, since I like tweaking speaker position and toe-in.
After looking at Herbie's Giant Cone/Spike Decoupling Gliders ($257.86 plus shipping) I decided to head over to Home Depot to see about making some homemade gliders. I ended up purchasing 2 packs of 2-3/8 in. Round Concave Magic Sliders (4 per pack, $7.95 for each pack), 8 heavy metal washers ($2.64 total), and 8 1/2 in. Zinc-Plated Steel Axel-Hat Nuts which I didn't use - they will scratch the anodized finish of the spikes and I found that I didn't need them. The homemade version doesn't look quite as polished as Herbie's Gliders, but they work quite well and make moving the SoundScapes much easier.
I was able to use the Soundocity outriggers from my HT2 TL's to stabilize the SS8's. I didn't think they would be wide enough for the SS8's, but they fit perfectly. I did remove the pointy tips from the spikes.
Now the speakers are rock solid on the carpet and are pretty easy to move around. Not sure if decoupling the speakers from the carpet made an audible difference or not.