Thorson,
We played last year at a KC Hall in Shakopee. two pitches were set up on carpet. Not plush or anything. That real short industrial type carpet you see in schools, etc that is easy to clean. Inkasting takes a little extra work, but I saw Eric Goplin do excellent with it. The third pitch was ona tile type substance that probably had a bunch of asebestos in, but was interesting to play on. More sliding the kubbs vs drilling them.
Good luck,
JP