Peter with great finish position on the rings.
A common mistake in the ring dip is having your thumbs aim at your body and your knuckles facing forward. Better anatomical position and therefore a more productive position is to turn the thumbs out and have the knuckles face away from the body. This external rotation of the shoulder allows for a more powerful pushing position.
Three rounds for time of:
135 Pound jerk, 10 reps
50 Double unders