On the front, is that OK to bolt to the brush guard? It seems that enough tension would bend the guard? I don't know, I'm just tossing that out. A chain puts a lot of tension on things.
Do you just run one chain through the back clevis and hook to each side or do you have a separate chain for each side? I often have an implement on and have no drawbar for the clevis so then what?
The brush guard is plenty strong. Same thickness as the tractor frame. I have since relocated the D rings to the frame just behind the guard to get a little more forward angle on the chains without interfering with the bucket.
I run 2 chains through the back clevis.
On a previous tractor I had a large clevis on each lower 3 pt. arm in the spare holes for tie down. The arms each had 2 holes to change the lift points.