I want to get a double flip adapter that will let me mount +5 and +10 wet lenses. I'm using a Nauticam flat port with a 77mm thread at the front.
Nauticam does not seem to make a double adapter (but their single adapter is very nice). I've seen the Saga double adapter but its apparently only available with a 67mm thread and its unclear if I could mount this with a 67-77 adapter without vignetting. The Reefnet would appear to do the job but its not clear to me how each swing arm is locked in place at either the open or closed position and whether the lenses would thus flop around, and the set screw mounting to the port looks less than robust. Neither Deeproof/Divervision not Fun-In (both in Taiwan) appear to offer a double adapter, though the swivel idea looks interesting for a single.
I've checked the archives but not come up with other ideas. Are there other recent options I have missed? Any thoughts from those who use the Reefnet double?