I shot the Hackathorn standards today and things fell apart on the prone string of fire. The taller the target the worse I shot. Part of the problem seems to be vision in that position but that's not entirely it. I could tell I was pushing most of the shots left as I was shooting the string. I've shot the standards a couple times before and the same thing happened each time.
I never shoot prone unless it comes up in a drill so simply practicing it is obviously part of the solution, but I'd like to hear whatever advice anyone has. I've searched the forum but other than a mention of Defoor demonstrating a golf style grip I couldn't find anything.