That should be interesting OCB. So you'll put the filter outside your housing? Very ingenious.
Be wary when using your filter - you can not use the filter and a flash at the same time without everything in the foreground looking red.
Yes - filter(s) slot in and out on the outside of the housing. I'll take some thin rubber bands for safety purposes. It looks like I might be able to have both the Fantasea strobe attached, and the Cokin shoe - so in theory I can play with the filter in the shallows then switch to strobe a bit deeper/underhangs etc.
Thx for the tip re: flash and filter. Makes sense!
I'm trying to convince myself I *don't* need one of these: http://www.acer.com/...one/vision.html
Ultra portable PC thingy....