I add a half tablet of whirfloc 5 minutes before flameout, chill wort, remove chiller, whirlpool with a spoon (basically spin in one direction for a minute or until you get a good vortex going), put lid on and let sit for an hour. I have my valve set to empty all but 1.25 gallons of wort and empty 5.25 into the carboy. My post boil volume is 6.5 gallons. I dont get a huge cone, but the trub and hop matter is usually in a little cone and im able to leave the bulk of it behind.
I only have issues when using 5+ ounces of pellets and even then I just end up with a little less beer into the keg.