I wouldn't use those. They frighten me severely. A large aggressive fish will toast that POS.For cranks-Fas-snap, picked some up at BP in the fly fishing area: http://www.basspro.com/shop/en/fas-snap-no-knot-fas-snap?cmCat=CROSSSELL_SEARCH_HZ1. You can see how these work here: https://www.bassmaster.com/video/use-snaps-save-time
basically eliminates rings and after trying them at home they seem to be plenty strong and offer a lot of freedom and are easy to use. Figure they're worth a try.
I usually buy them at Basspro. I use the smallest they got.Slayerfish, I have some similar to that but the duo-locks look better than the ones I have. Would you remember what size you're using? I'm guessing 7/16" or 9/16". I could better judge if I saw them but not sure when I'll be up to Cabellas. Thanks