Roger Hobden
Contributor
So here are some of my list. It is not exhaustive.
1 - Position of the holes on the backplate. You would think it was easy to get this right, but many brands mess it up. If the holes are in the right place, then the cylinders will be in the right place. If the holes aren't then neither are the valves etc
2 - Wing shape. Many wings are far too square, or have very wide side bands. These are stable in a head up postion. They are stable in a head down position, but they make it nearly impossible to be properly trimmed. The sides of the wing should curve.
3 - dump valve position - It needs to be in the right place, not too low, not too far from the edge of the wing.
3 - Webbing. needs to be the right thickness/stiffness. Too flexible makes it hard get into/out of. Too stiff makes it uncomfortable
4 - D-rings. Need to be the right thickness. Too thick makes it hard to clip onto.
5 - Buoyancy position. There are a load of wings that have recently arrived on the market with very little buoyancy at the top. They are nice and stable when upright on the surface, but terrible in good trim underwater, as they constantly try to dump you on your head. It's made worse when you add deco bottles etc.
6 - Webbing routing. I saw a harness today (Actually mentioned in one of the above posts) that has terrible webbing routing. It guarantees that the webbing is twisted and digs in. It also means the waist band is right over the diaphragm, so makes breathing hard.
Thats just my first comments, but all of these I've seen on wings that are said to be "compliant"
Thank you very much for this information, to which probably 99 % of beginner divers would not have access to (and which definitely is not available on the GUE website, nor in any of their documentation for recreational divers), no matter what critical thinking skills they might or might not have otherwise.
In addition, thank you for taking the time to do this.
I have been teaching students for about 40 years in my area of work. Among the common stumbling blocks for beginners are the "obvious" things that experts in any given area of knowledge take for granted. Sometimes, as a teacher, you may feel you are wasting your time explaining basic stuff, when in fact this "wasted" time is exactly what is needed to allow the student to eventually zoom ahead by himself.