It seems to much much more prevalent than i realized . i am seeing form and process breakdown at the point at and around getting to anchor. i see a good set and set up, draw, get to "anchor" then aim hard......THEN ...either several touches followed by a slap, or a very slow coiling of the trigger finger getting ready to strike. which is by all accounts punching.
now, as said this seems to be near epidemic in scope, and not strictly wrist release. i believe the best way to start to fix this is to rethink where getting on the trigger belongs in the shot sequence. if we coach the archer to consider this hooking around the trigger (or thumb post) part of the anchoring process it goes a long way to remove the slap.
after the trigger is in contact, the finger(or thumb) should never move again. the contraction of the back muscles and subsequent rotation of the release side elbow should move the trigger into the digit for a "surprise" shot
the benefit is more than just eliminating the slap, it really vastly improves the quality of your anchor. my coach Alexander Kirillov , taught me that there should be no visible motion/ muscle involvement in the release hand. the fact is if you are moving your finger there is movement in your anchor.
so my main concerns with having the triggering happening at the after aim point is that the anchor is moving #2 the punch is #3 that all the time aiming and holding prior to executing the shot is wasted time. what is #1????
the number one issue with reaching for the trigger after aiming is it caused collapse and loss of back tension. the release elbow should only come forward during the shot sequence if letting down.