Jerk Dip Depth
The basic rule for depth in the jerk dip is 10% of your height.
This can be adjusted a bit either way to best suit your jerk style.
A more elastic jerk may use a slightly shallower dip, and a more strength-dependent jerk may need a slightly deeper dip.
Just remember that deeper doesn’t necessarily mean you can drive better—Too deep and you’ll struggle to maintain your position and balance, and to stop quickly enough in the bottom, meaning less power in the drive.