Irieie and Raw have covered things pretty well from my standpoint, lol. I don't do the 2 days or the 0 water per se but have considered the 2 days just to see what I thought about it, one day. Dry and curing - to achieve the best reward for your efforts this is where the magic is IMHO, not in the worthless flushing and all this other crap they sell you on today. I have tried and still do the whole plant when weather and space permit, my personal favorite and the slowest. Why? the more plant mass the more water to move, the slower the dry. The slower the dry the more chemical reactions can take place to break everything down, smoothness in the smoke when cured. Now I usually dry whole branches because of the climate I live in today. Growing is a matter adapting to your surroundings and figuring out how to make it work.
I grew up in the south where tobacco was the cash crop back in the day. This is where I watched and put 2 and 2 together along with reading how in ancient times they dried their medicine. Take a combination of all of those things and put them together, running side by side tests with clones in a cycle through the cure stage. The more you grow the more you try things and like me I still grow them much the way I did the 60's, but now we do it with all these hybrid seeds.
Sorry for the ramble, don't know what I stuffed the pipe with but the brain is scrambled today. Happy growing