Attaching track to foamboard?

[viperman]

My layout is 100% sectional. When laying the cork roadbed, I would use toothpicks to hold the shape. My steps were as follows:

1) lay track out per the trackplan
2) draw a line down the center of the tracks on the foam
3) remove the tracks so just the dotted/dashed line was there
4) use Liquid Nails to glue the roadbed down
5) lay one side of the roadbed down using toothpicks to hold the shape
6) repeat steps 4,5 on the other side of the roadbed
7) place tracks down on the roadbed
8) place spikes in the pre-drilled holes of the tracks to hold it in place on the roadbed