Just to echo what everyone else here is saying: I almost never use steel. Even when fishing for big sharks, I've only had maybe one or two breakoffs on mono (300# - 400#).
This time of year you're not really fishing for sharks, so I normally do fishfinder rig with ~18" of mono to a 7/0 - 10/0 gamakatsu octopus hook (similar to what is in the pic above). I'll hand tie a 80#-130# swivel to 50#-80# line with a palomar knot, then use a snell knot on the hook. I'm not sure the snell knot _really_ matters, I just think it looks kind of cool

At the jetties, I will instead tie a three-way swivel with one lead to 80# mono (w/ a palomar knot) and then snell an octopus hook onto an 18" (or so) lead. To another of the eyes of the three-way swivel, I'll tie something like 6# mono to a weight. The weights will get snagged and you can break them off easier with the light mono.
If you're fishing for big sharks (6 ft +) I'll use braided wire. If you're getting cut off by spanish mackerel/bluefish when throwing spoons, I'll use a 6" steel leader. They have new colors these days, I bought some wire recently that was a flat green color, I haven't really field tested it, but I suspect it won't spook off fish in clear water.