I've never used a peep...I anchor at the corner of my mouth (I shoot fingers) and make sure that I bring my nose down and touch the string...That is the key to me shooting from an elevated position...I found out years ago that if I wore a face mask then I couldn't feel the string as well with my nose and I shot high (twice on one deer I shot high!!!)...

Lesson learned...Take the face mask off and I'm bending my neck, feeling the string which ineffect lowers the rear sight picture...I did learn that my bow must be pretty quiet and fast enough...Both times the deer stood there while the arrow stuck in the ground behind him, he didn't know what happened and finally walked away...