Question about the hook grip: I used to place the bar between the distal palmar crease and (much closer to) the palmar digital crease, as recommended for pulls, and then place the thumb under the bar and wrap the index/middle around it. Doing so meant the bar was in contact with only the inner side of the thumb, and my other fingers just about covered my thumb nail and nothing else. Like this:
At around 360#, the bar began to slip out of my hands. To increase both the thumb/bar and fingers/thumb contact areas, I had to move the bar a bit towards the proximal palmar crease. The bar is now in contact with the entire inner face of my thumb my fingers with the entire outer (nail side) face and side. My grip is very secure again but I'm slowly developing a callus problem at the digital crease. Am I doing something wrong?
Also, is it common to develop raised calluses at the interphalangeal creases with any correct pulling grip?