http://ciisqbg45nggykdl6rjdrq3wc64csga4vkphu66qsi65mypeitqedoad.onion/blog/port-striping-v3
That worked for obfs4 traffic, but resources (CPU/RAM) would be wasted while waiting for the connection to timeout if it wasn't obfs4 traffic (I.e., white noise from scanners, worms, crawlers, etc.).