If one wishes to review the constrictor knot, before making a decision whether to remain a dinosaur or evolve to use the more efficient, simpler, less bulky, more secure, and beloved constrictor knot, see the following thread, with step-by-step instructions and pictures: http://canyoncollective.com/threads/constrictor-knot.21958/ In all seriousness, I can tie the constrictor knot blindfolded and instantly. And the constrictor knot isn't that difficult to inspect -- there is a perfect symmetry between the entry and existing strands of the rope (see discussion below). After reviewing the pictures in the thread above, these instructions should make sense: 1) grab rope in hand (naturally, the rope runs across the top of the thumb when you grab it) 2) make a second loop around the thumb (now there are two loops, the proximal loop [closer to base of thumb/hand] and the distal loop [the most recently-made loop is near to tip of thumb]) 3) run your finger (and thumb if you wish, so you can pinch the rope between thumb and index finger) under proximal loop and grab/pinch distal loop 4) here is the finishing, "money" step: pull distal loop under proximal loop, and twist distal loop 180 degrees (AWAY from midline of body) and place that loop over the tip of thumb DONE. FINISHED. PERFECTO. MAGNIFICENT. YOU ARE NOW EXHIBITING A HIGHLY EVOLVED KNOWLEDGE OF KNOT TYING ACUMEN Note: this is extremely important. I am left-hand dominant. I naturally grab the rope with my left hand. But most of you are right-hand dominant -- you naturally grab the rope with your right hand (whether off ground or out of rope bag.) It is critically important the direction you twist the distal loop (after pulling it under the proximal loop). The principle is straight forward: the human body has a bilateral symmetry, divided straight down the middle by the midline. I don't care whether you are left-handed or right-handed; always turn the distal rope loop AWAY from MIDLINE. 1) with left- handed grasp of rope: you turn the distal rope away from midline, or toward the left side of your body. 2) with right-handed grasp of rope: you turn the distal rope away from midline, or toward the right side of your body. Once you understand the principle, you are then able to tie, blindfolded, a constrictor knot grabbing the rope with your dominant or non-dominant hand. Finally, on inspection, my thoughts on the constrictor knot: 1) If you look at a finished knot closely (and I actually inspect it while resting on the tip of my thumb), there is a symmetry in knot constrruction. Basically, you have an entering strand < constrictor knot > exiting strand. The left side of the knot (where the rope enters the knot) has the same structure as the right side of knot (where the rope exits). Both existing and entering strands of rope have two points of contact within the knot. There is an "X" formed by two ropes crossing when the knot is viewed from the top. If you study the knot after tying it, I think you will see what I mean by the two points of contact (by two different strands of the knot). Nothing above is new -- I am basically restating and expanding on my original knot instructions. THIS IS NEW: In the interim, after I originally posted the step-by-step constrictor knot instructions, I experimented by deliberately tying the knot incorrectly. I think the most likely mistake would be to get confused on which direction to twist the distal loop (after pulling it under the proximal loop). So I posed the question: I am going to grab the rope with my left hand, make the second loop (around thumb), drag the distal loop under the proximal loop, and twist the rope TOWARD my midline (this is a VIOLATION of my principle). Does it REALLY matter? YES. You will produce a knot that looks like a constrictor knot, but it is distinctly different, and is NOT to be trusted. And you can clearly see this on inspection: 1) This incorrectly-tied constrictor does not exhibit symmetry -- look closely at the path of the entering and exiting strands. 2) One of the two strands of the rope does not have two points of contact within the knot. Do not trust this knot. I like to employ humor, and this post has some, but I am seriously about the proper way to tie and inspect this knot. If all my talk about the constrictor knot gives you a headache, sorry about that, as Taylor (AKA bootboy) states, use a knot you are familiar with and can 1) properly tie; and 2) confirm by inspection. (and hopefully, others in our party can inspect as well). Happy and safe canyoneering. ***Again, you should be 100% comfortable with tieing and inspecting the constrictor knot, and you should even be able to detect easily by inspection an incorrectly tied and asymmetrical (not but a true) constrictor knot. OTHERWISE, PLEASE DO NOT USE THE CONSTRICTOR KNOT.