Although I prefer to swing most of my trades till a trend terminates, sometimes its prudent to exit early. In general when the market is in a trading range, you cannot expect most trades to really break into a very strong trend and you may need to look to exit early.
For example, today's fBO setup at b31 popped very high for a second leg up at b48. The theoretical swing stop is below the prior swing (b43) and when the price moves close to a potential target (b17H), it makes sense to exit early and re-enter on the expected deep pullback (eventually occurred at b65).
One option is to exit on strength (inset image) or exit on the next tick against you (eventually below b51). I prefer to exit on strength when a potential FF type setup shows up (inside bar b49 could act like FF).
Even on trend days, when the market makes a disproportionally strong move, you should expect an extended pullback, which could be either a quick deep pullback or an prolonged shallow pullback. If your swing stop and the price are very far (4+ points) its usually best to take an early profit rather than sit through what could be an prolonged, deep or complex pullback.
A notable exception to this rule is the late trend, which rarely pulls back.