My vote goes with Laidoffsick. My own layout, which has about 750 ft of track and 66 switches, uses black paneling nails to hold the track in place. As he mentioned, I use a very small drill bit inserted in a pin vise to pre-drill a hole in the tie to prevent the tie from splitting. The black nail goes through that small hole, then through 1/4" of cork roadbed and into a 1/2" thick Homosote which covers the entire layout. The nail never hits the plywood table top and noise does not get transferred. On a straight section I only use one nail in some 6 to 8 inches, on a curve or near a joint, I may use nails every few ties.
The track does not need a permanent glue situation because it really doesn't move once it's located. And you would make the track unusable for relocation or reuse. I also avoid using those unsightly large screws which interfere with the finished appearance of the track. And, this is important; IF I have to move the track for relocation, repair, re-alignment, the track lifts fairly easily without ruining it for future use. The nails slip out of the Homosote, the cork and can be driven easily out of the ties.
This system is easy to use, let's you lay a lot of track relatively quickly and is the recommended method that I remember reading about in an article about Gargraves, many years ago. I first started using Gargraves track using this method of mounting, in about 1970. In fact, that was four layouts ago and I still use some of the original track on my current layout, if only for sidings and yards.
Paul Fischer