If you have a sling on it, try this. Grab the sling below the stock and place the gun on the side of the fist grabbing it. Curl your fingers at the wrist, but keep your thumb straight up or at least center line, not wrapped on around.
The Trail sling mount works perfectly for this, and you wind up with a woods hold that works, even if the fist is against the side of a tree to steady the shot.
With the Trail, if I put my thumb through the hole and around, forget anything consistent. If i leave the thumb straight up, the trigger finger moves to a much easier position to pull straight back. You wind up with your head more upright, and the tip of the buttplate near the top of the shoulder. I threatened to put an adjustable butt plate on mine because of it.
You can also grab it and pull it into your shoulder, if you hold it the same way each time.
The strap method with the thumb straight up on the trigger hand is the way that produces the most shots on the bench where the gun recoils right straight back and you find the pellet dead center.
If i use the place molded for the hand, it doesn't shoot as well for me. If I place my thuinb into the thuimbhole and grip the pistol grip at all, forget any kind of consistency. Some stocks fit better than others!