John, I need to apologize. I had started a response and got sidetracked. We're in the middle of a renovation and I thought I posted it. Anyway, here's what I've got so far. The red line along the top and left, then around the yellow line forms a large loop. Then if you take the yellow switch before you get back to the red line, it forms a reversing loop. The purple line along the top and left through the crossing to the blue line forms another reversing loop back to the red/yellow line. As you can see, there's not enough room for the upper left yellow switch to use the narrow table along the wall unless there's more space on the other side of the wall than just the few inches of wall. That's what I made it a set of 2 spurs with an escape crossover.
