The beautiful thing about about using a screw to attach the track is that they can come out so that it can be reconfigured as your desires change. Right now he is in to lots of circles and switches. In my layout I do have bumpers that can be removed so that I could attach a thin layout and extend it in the house.
If I were trying for a hyper-realistic layout then a tight configuration against the wall might be a better option. I plan to also build a modular system for the garage that will satisfy my need for longer runs.
