The 3-way swivel rig is a popular rig for fishing with live bait and for trolling with artificial lures. Most anglers use this rig when they are fishing with live bait. This rig works great for fishing near the bottom for freshwater and saltwater fish.
Lively minnows, leeches and nightcrawlers are probably used on 3-way swivel rigs more than other baits. Live baits work great on this rig.
Some anglers like to use the 3-way swivel rig to troll with hard baits such as crankbaits, spinners, blade baits, swimbaits and others. This technique works great for fishing down deeper with hard baits that wouldn’t normally get down that deep.