Keep in mind there is a difference between JobAbility "spiked" hate and heal/damage "perpetual" hate. Provoke spiked hate causes a "spike" of aggro (not sure how much, but its substantial) when executed which decreases automatically over time, while heal/damage hate will stay with you, only dropping as you get hit(hence PLDs heal to keep hate). So other than Provoke (which you should spam every 30 seconds), keep your other JA handy for when you really need the hate, like when BLM is casting a powerful spell or someone using a powerful WS and your provoke is not almost ready(assuming your a PLD).
So Provoke every 30 secs will somewhat stack the hate even though it drops off reletively fast because its the spike hate. Using Shield Bash or a powerful strike or healing will make perpetual. Invincible is also spiked hate from PLD, but its also much higher hate gen than Provoke. Also every hit you do gains aggro, sometimes all it takes is one hit to turn the monster back to you, so whatever you do hit the monster even if its a little. But also keep in mind that they lose aggro everytime the monster hits you, not by a whole lot but you do lose hate per monster hit onto you.
Best uses to use Provoke? Before the Skillchain effect and/or/during Magic Burst to get that big spike.
Also remember AF gear for WAR and PLD, they have +Enmeity(hate), so every swing= more hate. HP healed and damage isnt exactly the way to calculate hate because there seems to be a little hidden factor to it when you run accross a goblin or something. Being a PLD helps you understand this more than a WHM however...Hope that helps.
That is the WORST combo in the game despite the horrible thing they put in the strat guide. You have like 40 MP for reletively 10hp cures, 15 at most, and that isnt enough to keep hate. You also have to rest to get MP back therefore loss of TP for skillchain which kills mobs faster, in fact,WAR/WHM will slow down the party due to lack of abilities and limiations. Thats just a PLD wannabe that never really lifts off the ground. WAR/MNK with boost can mini-provoke a bit, so you do that. Counter works well too, so WAR/WHM=shiet, WAR/MNK=good til lvl 60 at least.Even better, once you get to lv 18, sub whm to your warrior--that way you can cure yourself and soak up even more hate. This will also mean the whm will be freed to cure other party members when they get hit (or when the enemy uses a radius-damage spell that hits your whole party) or use their MP for debuffs, which generate very little hate and can end the battle faster, which makes it easier to exp chain.
Not permanent basis for holding hate, but consistant with every single hit and magic used during the battle. You have to know when to use abilties, you cant just fire off 5 min abilties and expect them to be there next battle. Know what abilites to use. Like Mage in trouble(hopefully they dont run too fast), and then Beserk and BAM it back to you, then press + to turn it off and get that DEF back up. Its Situational, not just spam abilities(cept voke). Everyone in the party needs to know how to manage hate.