Please welcome Eyoyo Underwater Fishing Cameras.https://amzn.to/3siEgXn
Actually crane and diamond eye are different. By design knots don't slide on a diamond eye.
I am very picky about knots, I have done many seminars on them, been paid to tie IGFA leaders, built, and used knot breaking machines, guided for over 3 decades, and in the end, In My Humble Opinion, most line to line knots, even if they test well to start, lose too much strength with use. I know many good anglers that are just fine with line-to-line knots, I do not and I have fished with many good anglers that have lost good fish to line-to-line knots, I have not. Swivels, Tippet Rings, and Wind-On leaders all test out stronger and last longer than Line-to-Line knots, and that is what I will keep using. When I am fighting a big fish (I always try to plan on getting a trophy) I know I can "put the screws" to that fish because I know my knots will hold.Here is a fish (Bluefin Tuna that can swim 60 miles hour) I landed in 25 minutes with the fish weight, twice that of the line;(Image removed from quote.)If you are happy with line-to-line knots that is just fine and I wish you luck! The day you hook the fish of a lifetime, I hope it does not fail, for me, I want to know it will not fail...
I get very few failures. when I do it is always the back side of the swivel where it breaks.
Are you talking about the braid to swivel knot? If you are using a Palamar Knot (great knot) for the braid side try a Double Palamar (through twice in the overhand stage of the knot) strengthens it (just braid, not mono or flouro) a great deal, especially with "shock".