Anybody have any experience with speaker spikes? I have a set of klipsch r820f speakers (70lb each) and they sit on carpet. Unfortunately we also have a cat who's a climber. Scratching isn't an issue, it's him leaping onto them and then off. They are tall/narrow and not the most stable. The floor is a typical subfloor under carpeting. So was thinking about building some outriggers and setting up spikes. But didn't know what kind of damage these would do to the sub floor over time. Want them as stable as possible until I can "discourage" him from climbing. 3 cats, he's the ONLY one who does this. The other two couldn't care less. If you've used them with heavy floor speakers, let me know what the long term affects were. It seems that spikes are the most viable way to make a stable footprint. Otherwise not sure what I'll end up doing.