Your 1'st. approach should be to take steps to help not loose your canon balls so you don't have to buy or pour new ones! Loosing a conon ball is all most all ways caused by fisherman error.
-All ways keep your wire line new and in good shape, should replace it every year
-If frays occur in the line which they will, matter of time... re crimp using (2-3 crimps) proper wire sleeves to support the line, not recommended to crimp the wire line directly to a swivel..
-Use rubber snubbers between your ball and your wire line, acts as a shock absorber saves your wire line.
-DO NOT use those plastic Scotty clips for canon balls! Especially if you 12lb.-14-lb. canon balls, the Plastic Scotty clips are not strong enough.. Use a large stainless (Sanpo) clip or a large stainless line quick release to attached to your canon ball..
-Use 2-3 Scotty line stoppers in a row so that they don't slip and your ball doesn't slam into the top of your Scotty electric causing your ball to snap off or cause stress fatigue in your crimps and wire.. enough fatigue build up.. snap.. bye bye...
Scotty wire line I am finding does not last long, all ways tend to eventually fray, especially using heavier canon balls... Does any one use commercial grade stainless wire heavier than Scotty wire?? I am thinking of re spooling all my riggers with heavier wire line... yes you run the risk if you snag bottom... either way not to happy with Scotty wire line.. Iv used it for years, and have good success with it, I very seldom loose canon balls, however it does fray, I know there is better out there..... What does other people use?? Would like to hear..