obviously you ain't in the fence business, these posts are substandard and would never be passed by the county inspector upon final inspection. to secure the amount of weighty BS they must contain these posts would need to be astm 153 S40 6-5/8" minimum and then set in isolated footings 18"x48" with 3500psi concrete @30 days. we'll visit the requisite fabric in a future thread. in the meantime get that bobcat back here and yank these post.