Bill doesn't like tailing loops because they remind him of rattlesnakes. They maybe look similar, but unlike tailing loops, it's very cool to see a rattlesnake. It usually means they're a ways off and not tugging on your pant leg (you wear polyprops? oh...). What's absolutely not cool is hearing a rattlesnake before you see it. I'm thinking of disabling the click on all my reels and stuffing my shot dispenser full of cotton balls. Of course, switching the ringtone on my friend's cell to that of a rattler has never crossed my mind.
This averaged-sized western rattlesnake is just giving the "see me? I see you" shake, not the "screw off!" full-on buzz.