Most effective way to remove trub is a settling tank. Just pour the wort into a plastic bucket with spigot and wait a half hour. The spigot is typically placed to leave about 0.5 gal behind, which is pretty darn close for many beers. Easy to tilt the bucket to get every last bit of crystal-clear wort and no trub or hops. Simply close the spigot when you see cloudy muck coming out the hose.
Works quite well, but I'm not going to argue it improves the beer. I have no idea.
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