Dan I am sorry if I was wrong about you meaning ASA but since you also shoot ASA and ASA is one of the only other large "orgs" that shoots 3D competitively and since ASA does not allow stringwalking I thought that was what you were talking about... Forgive me for adding 2+2 and making a guess that the answer was 4.

PS sorry that my lowly instinctive shooting skills has scared you off.