A few weeks ago, I injured my support hand wrist shooting too many rounds support hand only in the Glock 20. It has been getting better, but still hurts and especially so when I clamp with my support hand on a pistol.
This morning, I decided to try putting my support hand index finger on the trigger guard, which is more comfortable. I was feeling on the edge of having something and feeling tired, so I didn't have high hopes. Interestingly, immediately I found it easier to split with this position. Not sure why, perhaps because that position feels more relaxed. The big surprise, was how fast I could transition my open gun. The higher position gave me more leverage and I saw some PR level transitions on steel. Not sure what to think.