Both my vivi and my fluxomizers/CE2 Plus, I just rinse the head under hot sink water, gently pat dry the wick a couple of times with a paper towel and do a few dry burns, and then repeat x1. I immediately stick it back in and get full flavor and hit in 1-2 puffs. I suppose you could eliminate a few of my steps, but the dry burn and rewash gets rid of crud built up on the coil. Patting the outside of the wicks dry by taking a different dry area of the paper towel to it a few times makes it almost completely dry, while the last dry burn finishes the job.
Also you can make the vivi go almost completely dry, it's just based on how much you tip. I've done that few times when I wanted to change flavors and didn't want to waste juice. Just make sure the wicks touch the juice every couple of puffs. It's easier though with less thought put in tipping if the tank is fuller.