06-02-2010, 11:09 PM
I'm a big fan of foam as a base, cork roadbed glued to the foam, then track glued to the cork. And as TN mentions, the ballast glue certainly holds everything together. As I mentioned, I do glue the track down first because you can never tell howl ong it will take before I get to the ballast.
Three Foot Rule In Effect At All Times