I had some really big trouble with these squadron bases. They are way to slippery on some of the mats.
It was really bad at the nationals in germany. You could play curling on these mats.
So i used some silicone rubber casting compound to make a mold for the bases.
They are really great and work on all surfaces. especially on extremely glossy ones. They stick really well on these.
If anyone has interest in testing these, let me know. I will (if all goes well) be at the worlds.