How to store a wet dome port during a dive

[tinyocean]

I bought a seafrogs 4" wet dome port to play around but I have a bit of an issue now. I mostly take macro pictures with my camera so I may need to remove the dome port, if required, during the dive. As it is a plastic lens I fear it will scratch immediately so it hasn't been in the water yet.

I am looking for ideas on what to do with it and how to protect it if removed or if installed and not taking pictures. I don't have pockets anywhere. I do have an option of buying a glue-on pocket for my wetsuit but I am not sure this will be comfortable.

 

[Russjstewart]

My partner has one of these on her setup, of course you need a bayonet mounted wet lens and strobe arms.

 

[tinyocean]

This is the lens:

4" Wide Angle Wet Correctional Dome Port Lens (67mm Round Adapter)

This product is also available at the European websitewww.saltedlineeurope.com Please read our Warranty Policy. Wide Angle Correctional Dome Port lens Depth rate: 165FT / 60M Size of the sphere: 4" / 10.16 CMThis is a wet accessory and it won't work on the surface. Attachment must be done...

seafrogs.com.hk

So it has a 67mm thread.

I could get a 67mm thread adapter from your usual overseas store for cheap and mount it somewhere on my rig to store the port.

How would I best protect it? I was thinking of some sort of neoprene cover but I wasn't able to find one for this size. It should also withstand the pressure so it won't compress at 40m too much.