Isolation solution for curved bottom floor standers?

I’m looking for an isolation solution for my Kef XQ5 floor speakers.  I wanted the Gaia from Isoacoustic but they need to be at a 90 degree angle.  Not only are the bottom of my speakers not flat, but the four spikes that come out are at an angle. 
Is there an isolated platform I can put them on? Any other ideas?  Thanks!