Here is what I did
Here is the post where I described my build. I have more pics if anyone is interested.
Skirt is 2 thicknesses of 1/2" ply. I can choose from 1/4", 1/2" or 3/4" stock, with corresponding thickness of backer to bring stock to level of skirt.
Caveat: I have NOT run my machine yet to test how everything works out, but the machine is built to show that it can be done.