I use a double anchor...and here's how I get there....
Under normal hunting circumstances I have the bow up already in position to shoot, not like my back yard videos here where I'm swing drawing...but I get there the same no matter what technique I use...
I draw the arrow to ME...I am already set and aiming with my eyes, kinda like when you spot an animal and want to view it from your binos...you keep your eye on the animal and bring the glassed to you....that way the animal is in view through the glass.
I don't draw over or under, just straight back to me and my 'line of sight'.....My thumb base knuckle comes in contact with the corner of my mouth and continues on sliding along my cheek....then my middle finger comes trailing till it contact the corner of my mouth, and it too continues pulling the corner of my mouth rearward till my thumb base knuckle slides behind my jaw under my ear....and the arrow is gone.
I have a 'rotational draw' also....but its all horizontal, and from the front with my bow held up in position, there is very little movement for game to spot and allows for ONE fluid uninterrupted motion to anchor and execution.
My thumb and pinky are tucked inside toward the palm of my hand, but there is no tension what so ever on them....they are just relaxed.
I know I shoot fast, but I am 'on target' before I even draw so there's no need for me to stop, pause, or hold unless the game dictates.
Being that the arrow doesn't leave till my thumb base knuckle slides behind my jaw assures that I always obtain back tension and proper alignment. And, this alignment occurs no matter the position or cant the shot requires. This insures that my draw length is always the same. The old saying that 'canting the bow shortens your draw length' does not apply to those that are properly aligned. (This is demonstrated in 'The Bowhuneters of Trad Gang' DVD)
I think that's pretty detailed....but if not, ask away.