robertwhite":3rldg7ur said:
Left side is boxed around a pole so I could get a flush/even lag surface. Box is held into the T-pole with 8 inch spikes. Not going anywhere! Left side also has 2x4's (on either side of the 4x4) so I can slide in a pole or 2x4 behind the cow and thru the other side into the cattle fence to block them from backing up.
yikes
no offense but lag bolts and nails for restraining large animals is probably not going to work. good luck though, or did you already try it out? how did it go? If not, set up a camera and record video.