Respectable,
In order to trap the ball (hit down) the shaft needs to lean toward the target at impact as it is designed to do. To do this we need a weight shift toward the target, flat left wrist, and bent right wrist at impact. Usually, players who attempt to lift the ball into the air "flip" through impact - bending the left wrist and flattening the right.
I read that bench tip somewhere many years ago but it was for chipping. It cured my chili-dips when chipping, and helped me with impact on full swings. You might want to practice hitting low chips with the ball middle/forward to learn how to get the hands/shaft forward.
I'm usually not real comfortable giving swing advice as I don't want to send someone down the wrong road. Hopefully, an instructor can confirm my initial impression of your swing and offer better technical assistance.