I have really fine hair, and curls that come down to just under my armpits. I used to pineapple, but got sick of waking up and discovering that my curls have somehow worked their way under my head while i sleep and are... flat...
So this is what I do instead:
I put my hair up in a pineapple (high ponytail right on the top of my head) with a satin scrunchie, then standing upright, hold my hand against my forehead as if I'm saluting (lol).
With the top flat part of my hand, I lift up the base of my ponytail straight up and place it on the top/front of my head.
Then, I bobby pin the ends of my curls of my ponytail (that sit flat on top of my head) flat. Grab any stray curls that will get squashed and pin them up too.
And you now have what looks like a mushroom on top of your head!
Doing this, I can get 1st, 2nd, 3rd and sometimes even 4th day hair (totally depending on the weather!)
Hope this works for someone!