I ferment in spike cf15's so its a 15 gallon batch, I start with that sucker full as can be for neipa's knowing I am gonna loose 2 gallon so I get it to 17.5 gallons. I do a soft crash to 50f then dump yeast, when I do that my process is to put a 2 inch elbow on with a 1/2 inch nipple on the other end followed by an 18 inch piece of clear hose. I use a sight glass, and start buy opening the valve 1 notch at a time, pausing for 30 seconds or so until I see movement in the sight glass. I use the sight glass to watch how things are moving and go as slow as possible, this process takes about 10 to 15 minutes and I do it about 3 times or until I collect about 1 gallon of trub. Then I proceed to dry hop for 2 or 3 days at 50f then I crash to 36f for a day or 2 and do the same trub dropping process before I keg. Before I purchased the sight glass my process was not as efficient but similar. I do not rouse the hops when I dry hop and usually my dry hop charge is about 1.25 oz per gallon. I do let my hops warm up to room temp before I drop them in, obviously purging co2 while doing so. The trub dumping process took me some time to nail down but go slow with it, I run about 2 to 3 psi of co2 and even if I get a real stubborn one eventually it will start moving.