I've done something similar with a bolt snap but also a little different. My bolt snap is on a small piece of cave line that is attached through a hole I drilled. I also have the WWL-C and not the -1 or -1B.
Given the amount of gear, bailout bottles, etc. I dive with, I also feel better having the hard cap on for the dive.
The reason I have the extra line is that I keep the bolt snap attached to my Nauticam housing setup. There are a few small brackets with holes and I attach the bolt snap to that.
When I get to the bottom, I take off the cap and then just "let it go" knowing that it is attached to the housing and won't get "lost."
Two additional thoughts:
1) I have had a really hard time removing the cap at depth due to the vacuum effect I believe. While I don't cherish the idea of drilling more holes into the cap, I do like the idea from @keesbl since it will make it a LOT easier to remove at depth.
2) The length of my cave line is such that the cap can be on the wet lens and also connected to the housing. The downside is that it "floats" and sometimes gets in the way. I've thought about weighting it a little bit with tire weights so that it always is negative and below the GoPro I mount on top of my housing.
In addition, I also wear dry gloves on all my dives and have no problems operating the small bolt snap, but I also have plenty of practice given all the gear I carry on my dives.
- brett
