Knowing that this may be ripped out in 5-6 years, I'm debating on whether I should just use flextrack or handlay it, or at least handlay the turnouts. If anyone has been in this situation I'd like to hear feedback.
This weekend I had time to pick up 4 sheets of homosote, this stuff is $35 now, and I finished up the benchwork where the loop will be. Since Sunday was a nice day, I cut the homosote outside then screwed down all 4 sheets. Here is a photo of the yard ready for laying out the yard tracks.