On my single speed/fixed gear bikes I center the chainring. This allows me to get the chain a little tighter without so much of a slack spot. I think this helps keep the chain on. I tried the S. Brown method. I didn't like it. I used shim stock, measured the thicknesses and shimed the ring to the exact center before tightening the bolts all the way down. I super glued the shims in between the flat on the chainring and the shelves on the cranks. If you don't have shim stock and don't have a micrometer, never mind. It was not difficult having the right tools.
I must be the only one?