I would not take my Nauticam NA6400 in through rough surf. I have a FIX90 rig, similarly rigged, which I might take through surf. Why, well, sand and grit get into everything. But that is aside.
I set my camera up so I can be hands free.
View attachment 679069
Here, if you look carefully, the two upper bolt snaps that are together, one goes to the left shoulder D-ring and the other to the right shoulder D-ring. The lower, orange, bolt snap goes to my scooter/crotch ring. The blue tether, also goes to the scooter ring. In use, only the blue coil tether is connected. But when I need to be hands free I clip in as described. This puts the camera rig across my chest and is stable and secure so I can deal with climbing ladders, OOA divers or fighting off sharks or whatever is the case. Overkill? Well, I wanted the rig to be stable and not flopping around and since the replacement cost is significant, overkill is good, given that insurance pays for floods and theft but not loss, keep that in mind.
BTW, the white grab handle is on the rig only during recovery if handing to a boat deck hand. In use I remove it and put it on my RH D-ring. And when handing off the upper two bolts snaps are put together as shown. Also, and since replaced with two 4mm bungee loops, you can see two silicone rubber bands. Those are secured to the outer arm clamps, one each side, and they are snapped over the inner arm clamps on the top of each handle. These keep the strobes from flopping and spreading out. Everything is nice and tucked in. Yes, it takes a moment to ready the camera once in the water and likewise at the end of the dive but we are talking less than 30 seconds.
James