zski wrote on Mar 11^th, 2014 at 2:11am:

KF: what size ball bearing do you use with the 25# wire (0 or 2 hoping)? Have you tried a quality snap on the end and just and 1 bearing on the line end, and if so do you see a problem with it? Just got back from BassPro and although they carry knot2kinky online, it looks like they don't stock it in-store.

I don't remember the size number but here is what I do when I go to buy them. Most have a weight rating so first I want one matched to the 25lb wire, tend to go slightly higher say 30lb test. But I also consider the bulk of the snap and ease of use. Some I find difficult to open and close in any size and some of the small sizes are really difficult to use. Obviously a big clunky thing would be easy to use but think about what it does to the lure action. Consider getting the smallest that your fingers can open and close easily and still match the weight rating of the wire.
I suppose you could eliminate a swivel at one end but then I would make sure I bought a very high quality single one. Go ahead and try it.
Once you see how tiny and ultra-fine these things tie up you might not want to tinker with downsizing too much. Someone at the dinner commented that they thought these could easily be used even with topwater baits and I am inclined to agree.