That’s another good point! Also, sometimes when you’re fishing the deep ledges off the outer banks with giant squid, your sinkers are 16-32 oz’s or more depending on the conditions so you don’t want those sinkers swinging around and the added resistance. Rubber bands are a great release mechanism.Tunas and jacks are competitive, and stimulated by seeing another feeding or being fought. That's why don't want a jig, and you want that sinker gone. No temptation for another fish to bust you off the one you already hooked and are fighting.