Take a look at Plan 5 at http://www.modeltrainguide.com/index.php?mode=displayarticle§ion=3&article=3. This plan has a passing track and small yard and you can load the RAL file into your Right Track software and play around with it. There's also a plan on that page for a layout with a turntable but I hate to use a turntable on a 4x8 since it takes up so much valuable real estate.