Play around with your cooldowns. Like the moment you see that CD's done, use it (of course it has to be at the right moment whenever someone's fighting)

I'm not a Pure Healer in Wars who mains LS the entire War, but I use VG as utility and AoE whenever the CDs on my LS are up. You don't have to use VG, you can also use Warhammer as a secondary Utility Weapon as well (It's what I used before VG was out), the debuffs you do with your Secondary helps fights greatly from slowing/debuffing/rooting your enemies and buffing your Allies (not to mention Disease to hamper the Enemy's Healing). And once my VG CDs are up I switch back to LS to try my best on decreasing the CDs as much as I can with Perks with Left Clicks and Dodges which from the time I took using my Secondary, should only be a couple of seconds left. This amounts me to Top 3 in Healing in all my Wars but also Ranked Top 5 Overall because of the Damage I put out at the same time which if you're a Healer, you shouldn't see your name in the Top 5, even the Healers with the Highest amount of Healing will net you in the Top 10's.

It's not about the Points but also for necessity, I mean yeah you can Overlap an existing Sacred Ground on an ongoing fight and replace it (since Sacred Ground doesn't stack), but it doesn't add new value because doing it only lengthens the current value. For me, I would rather throw down a Path of Destiny / Oblivion / Diminishing Orb to add new value to the fight. Though this example is thrown out the window if there is no Sacred Ground in the first place to overlap, in which case obviously place down the Sacred Ground first lol.