I´m no [rawr]-Monk, but Monk is my main-profession, so maybe i can help u...
With the time you (or better i did) create a "feeling"/intuition for the moment when their Wars are full adrenalin/ready to spike. If u can´t feel it now, you´ll probably learn it soon

This usually works for me:
-when they´re just brainless camping you, you can easyly count their attacks till they are full adren. They usually won´t camp you, till they´re full and spike you right after...
-more focus on their
movement than counting their hits...usually you can easyly see when they´re about to spike someone (you should think that in 5 years guild wars the warrs should have become better in "fake spiking" or something but imo they became worse...

)
-it´s OFTEN (not always) like this (mainly hammerwars): they get their adren, run to someone, hit him like 1 or 2 times till protts come, run to another one and spike...
-if you´re prott wait till he Hammerwar uses Flail, if your Midline isn´t balling ,he is about to Spike the one he´s attacking with Flail...
-if he doesn´t use flail before using his KDs, you can cast your aura of stab. when you see the animation of Dev Hammer/Magehunters, with some train stab is on before the KD
some basics:
Prott (BE CAREFULL, I SUCK AS PROTT)
-better obs the field, than "redbarring": means you try see who is really aggroed and needs protts [guardians vs fire eles aren´t really usefull

]
-when i Prott i´m obsing their Hammerwars (if they have one) most of the time to stab his targets. Aura is enough to prevent the hammerwar to kill with his spike (no DW, usually no kill)- Guardians/Shieldings on the other Wars target (when you´re sure he´s about to spike better shieldings)
-use RoF only on spikes when you can´t cast guardian before or shieldings aren´t ready/when your backline partner has backfire/Visions
-don´t waste your protts (don´t RC DWs when nobody is hitting the target and he is not low health)
-when your midline is balling and u can´t see anything, just cry till they get better positions
-the rest i forgot!
Infuse:
-when i play Infuse, i use my Guardian on recast. The Fuse has better Emanagement than he Prott so he can spamm his shit more

- try to "prott" spikes with patient, pre patient is the key, saves you from infusing too much because u can catch the spikes with (pre-patient)+WoH (only works vs "no real spikebuilds" like balance or something...)
-use your signet ass often as u can!
-infuse important Chars if u aren´t sure to catch them with WoH (like the flagger...)
I´m kinda tiered and think i forgot the most stuff and haven´t really helped you but i´m sure some will post better tips...