Flushing is a hotly debated topic..I do the water only route on my organics so no flushing there, but I DO flush my coco room (AN Line) I personally am disinterested in taking the chance of smoking chems for cancer, BUT that's just my opinion not based in fact...plants will eat till the day they are chopped some believe they get a lil more by feeding till the end...I like the color contrasts when it starts eating itself, very photogenic that way! I know a couple "tricks" that might help you get a good view of your trichs....take your camera smart phone, zoom it in to its max....then this is the really technical part...take a magnifying glass and move it out from the camera lens on your phone till you get a nice clean picture, will give you a good look at the trichs....good luck man!
I grew WW a few times starting out back in the day, mine were yielders for sure, and had a good sweet skunky smell...smoke was more daytime but it was alright!