Jimbo something for you think about, fall fishing is a trolling time of year. Not saying everyone trolls but alot of people do this time of year. trollers are hard on there gear reels rods and lures are all up to fail due the stress of trolling. So you need to ask were you trolling or casting when the split rings failed. I been making musky baits for years and never had a split ring failer that I know of but people in the southern musky waters dont troll like you guys up north do, dont ask me why so stress on gear isnt as tough as it is up north.Trollng 4mph and hanging up on rocks with the wrong drag setting, line, and rod choice something is going to give sometime or another.I myself beef up all my plugs with overkill thinking the samething you do but lets face it something will give sometime or another, but atleast you are thinking of the people who use your baits or you wouldnt have posted this here.