It works pretty good carrying them in the loader bucket...........till you forget they are there and they end up under a pile of dirt. Pretty much why I quit doing that. Lack of memory meets urgency of getting something done.
The way I like to build the chain boxes is have a flat notched place for the two grab hooks to hook on the edge. Then the chain goes in the expanded metal box. Expanded metal lets the moisture and mud get away from the chain, and the place for the hooks to reside keeps knots and tangles away and makes the ends easy to grab and drag the chain out of the box.