I almost always SOTC with bare hands. If that works for you, continue to do just that.
Some people use leave-in condish (a bit) to add extra moisture to ends as they scrunch.
Some use a serum/oil/pomade to give shine or control /avoid the flyaway frizz that scrunching can produce.
Some use a bit more curl enhancer to places that didn't curl up as well as they SOTC.
It depends on what your hair needs or what look you prefer. Extra shine, more moisture, less frizz--or you like how it is and just want to soften the crunch out.
So..no biggie. Do it how you like.
Some I've used in the past :
JCS Nourish and Shine
CJ CA LI
John Master's Organics pomade
Jojoba oil (epic fail)
CJ Curls in a Bottle
Spiral Solutions Curl Enhancing Jelly
Botticelli Botanicals Flaxseed Gelee
A drop of DevaCare OneC
Coconut Oil (epic fail)
I don't do well with heavy oils, it seems, but Nourish and Shine was okay for me and that's butters.