Davt, yes you can replace the spikes with StillPoints Ultra SS or Fives. Since under the platter is not flush with the rest of the bottom, you will need to raise the StillPoint under it or make sure the Stillpoints foot on the back left is outside that area. I used a StillPoint component base with the Ultras mounted in sliders on the four legs.
I tried the spikes briefly but the StillPoints Ultra SSs on the Component stand were clearly better. I even got Johnny to join me in the StillPoints room to hear the Ultras.
The first Ultra SSs were replaced with Ultra Fives, which were clearly better.
Luiz_felipe, the Bergmann airbearing are not anti-vibration devices but rather no friction devices that are quite rigid. I had a friend that used the Vibraplane on a Sindre. I never heard it but he said it worked great.