I’m planning to install the Si-Tech on/off cuff dump as well, but I can see it’s not very user-friendly based on your experience.I have both (sitech) on my new Seaskin suit - Reason I got the cuff dump is because I had one the Japanese (WorldDive) suit I was using a few years back over here and liked it.
I thought it might come in handy for what I do know which is shoot video underwater. I was thinking of the different positions I shoot in with a camera in both hands, and thought it might be nice.
Well, I've only just got back in the water with the suit and frankly, it's not really usuable due to its size, as it's very slow to dump.
It's this cuff dump valve here On/Off Dump Valve - Dump/Pee Valves - Products - SI-TECH
So spring loaded, on/off function.
So far the shoulder dump works fine (though I find myself having to move the arm up - much more than I remembered - to dump when the suit is near empty.
But as i've said, these are first impressions with a new suit, after a nearly 4 month diving hiatus, and and quite a few years not diving dry, so I'll confirm later on.
And moving a shoulder dump to the cuff would be a totally different story.
Ideally, I would prefer to use an Apollo cuff dump valve, but unfortunately, they don’t sell the inner port separately, so it’s not an option for my suit.
They do offer an external port, but it seems incompatible with my suit’s fabric.
So instead, I’ve decided to relocate the Si-Tech shoulder dump valve to a position that makes it easier to vent air.
Once I’ve tried it in the water, I’ll post a review about how it feels and performs.