I do not chase a BBS but I do just let it happen. I can feel when the prep is perfect, when I am in the right frame of mind, and when It just all fits together smoothly without having to try. Most days I do a two pass shave, WTG and XTG, and have a DFS as a result. I like shaving and a BBS means I don't need to shave for a few days, so while it is nice it is not a necessity.