I shoot split finger and I aim. I'm not ashamed either!
See, I'm a gunsmith's kid. I was proficient with a rifle before I could even ride a bicycle. The concept of "sight picture" was so impressed upon me that I believe it became infused with my DNA. As such, instinctive shooting is alien to me. I even redneck rigged primitive sights on my wrist rocket when I was a kid!
So, the method I use on longbows and my recurves with a small sight window is to put marks on the riser to serve as a reference point. I keep both eyes open and this allows my brain to superimpose the mark on the riser over the target. I know that in certain competitions, this isn't allowed, but, for the informal shooting I do, it works very well for me.
I'm not knocking what anyone else does, but on a couple of the recurves that I build, I like to install bushings and use a sight. As long as my form is good and my anchor point is consistent, I can shoot decently, though I have miles to go before I could call myself good.