I think the yoke walks are helping already. The reason I say this is because carrying the weight requires my stabilizers for fire repeatedly in order to keep tight enough not to have to set it down. After just one week I felt I was able to get tighter on the squat.
I actually measured the distance I carry it and one trip is 90 feet. I didn't think it was that far but the tape measure doesn't lie.
Yoke carry
empty yoke 2 trips (310 pounds)
400 for 2 trips
490 for 2 trips
580 for 2 trips
hanging leg raises
3 sets of 15
inversion table
hung for 60 seconds up for 120 seconds - 3 sets
The yoke won! It had me exhausted and I couldn't do anything else.