Alt Watchman Rotation
Watchman has long been a spec I want to play well, but often get choked up with focus building or let my cauterize fall off at some point, wrecking my performance. I've found a lower dps pattern that keeps my rhythm going without the need of a priority system. It is by no means the best way to play this spec, but could be used as a nice stepping stone to get you there. The main difference is not using merciless slash as a priority ability, rather rotationally.
Do all the normal prefight stuff to prebuild centering and focus
A combination of Slashes mainly, but if focus gets low, we will need to throw in a zealous strike. It takes 2 focus to slash, and it will not let us go to zero (so if we only have 2 left it will gray out). If Zen has already lit up, but we are waiting on force melt to reset, go ahead and zealous strike or do a strike filler if you are low on focus, otherwise keep slashing.
One of these abilities may or may not be needed to be thrown in during your "spam until zen" slash block.