You may want to reconsider a nose knot. They don't weigh anything and it locks you in instantly. No searching around. This only works if you touch your nose to the string when at full draw. I've been using it for over 15 years and love it for hunting.My three reference points are my anchor point, nose button and peep. This forces you into a consistant anchor/aim. It has worked well for me. You could always try it then discard it if you don't like it.
I haven't tied a "nose knot" but I do put my nose on the string when at full draw. It definitely helps.
I posted some pics a while back requesting my form to be critiqued. I know what I need to do but doing it is another thing.
I.E. Lowering my release arm so my body forms a T-bone has got to be the hardest thing for me to overcome. I just have trouble doing this.