Locate the center along the long side of the hanger
Push pt A inward to the center; locate pt B for a desirable width of the foot portion of the blocker
Continue to push pt A & B to form the shape of a foot; Locate pt C for a desirable width for the leg portion of the blocker
Keep tweaking until you are happy with the size and shape, then repeat Steps 1 - 4 and make the second one
Enjoy using your new sock blockers!