Whats your fav. method?? I think the most effective would be with syringe. But I want an easy method for my mom because I don't constantly live with her.
Condom for first fill, then drip to top off...
Drip and flick, drip and flick.

I just drip 5-6 drops every 5 minutes over 20 minutes for Boge. Take a few hits, add a few drops, done.
correct, but the first fill needs to be complete. The best way IMO is from the bottom up with a syringe. After that, drops like you say.
That is the first fill. And usually results in juice at the battery connection. In other words, It's completely filled. Yeah, you can use physics to force juice into a Boge(part of it) quicker, but natural wicking, via gravity and atmospheric pressure, prevents other forces from wasting juice. To each his own. The flick method, like how you get your ketchup to the opening, is forcing juice away from the mouthpiece end. I never tried the condom method because it's the same deal as flicking. Just fill slowly and let it saturate the wicking.
LOL, I doubt you saturate your carto in 30 seconds, maybe you do. Doesn't matter in the end. I have time and stay prepared so I don't have an OMG dry carto moment and start tying strings to my cartos and swinging them around like a Bolo to nail a boar for dinner. Like I said, to each his own, we are all in the same boat.