Malcom, .02 cents here only.
With a short shank #4 ring-eye very few fish come un-pinned; assuming they don't go "airborne" on you; then it's usually the leader that gives it up.
With short shank Loop ring eye doubles the fish almost hook themselves. And very rarily come un-pinned. Historicly, for what's its worth, I've lost more fish on trb. hooks that either doubles or a good single hook. Personal opinion only but "ring eye" hooks seem to grab better, faster and hold longer than either a 'eye' up or down.
Clueless as to why, just my "history" on the river.