The only question I have now is will I be able to rig up some bungee cord on my VT3 hoseless computer in a puck that's loose enough to fit over the rings but tight enough to stay put on my 3mm wetsuit for warm water diving...
You're in luck, I just wrote this post for another board. All you need is the
DSS mount for your VT3 and some 3/16" bungee, and you're in business:
I have a couple of SK7s in DSS mounts (and computers, BTs, etc.). I switch between wet and dry on a semi-regular basis, and I always seem to frequently be loaning out my spare compass. As a result, I needed a threading method that was secure, but easy to adjust, to accommodate everything from my drysuit with winter weight undergarments and dryglove rings, down to loaning it to a woman with slender wrists diving wet. Here's the method I now use, which offers two redundant loops in case one breaks, and is highly adjustable to fit a large variety of wrists. (small-wristed people can simply tuck the extra cord back under the arm loops to keep things neat.) I can wear it diving dry, diving wet, or on a bare arm with ease.
Full series here (with larger pics available):
Suunto SK7 in Deep Sea Supply Boot
Note that the thicker 3/16" bungee is a MUST for this method, as the thinner stuff lacks the friction needed to keep it in place. (Edit: This size applies to SK7 mounts, Uwatec BT mounts, and Suunto mounts... if they've made the holes smaller with the newest VT3 mount, the thinner stuff may be your only option)
Finish the ends by a quick burn, just enough to melt the outer cover so it doesn't come undone and fray. Too much fire and you melt the rubber, but it won't melt in any sort of helpful way, just puts out a lot of oily smoke and will leave black streaks on anything it touches for a year. A simple overhand knot right at the ends of each loop takes care of the rest.