When do you use a Gang Troll for fishing?

Gang Trolls, also known as “Cow Bells” or “Christmas Trees” are commonly used for fishing deeper water for Lake Trout and Salmon. You should have a tough rod and strong line when fishing with Gang Trolls. A Gang Troll will help your lure get down to a deeper depth of water (the heavier the Gang Troll, the deeper it will go).