I'm confused, some say the jig should be allowed freely in a loop style knot, some say it should be kept horizontal in a tight knot.

I understand the loop style (like a rapala) for trolling, but holding water is typically slow moving, no (I understand bigger fish can be in faster water)?

I guess I'll experiment with some different styled leaders.
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Learning all I can about fishing so some day I can teach (hopefully there are still wild fish around for my grandkids).