-- Last Updated: Jul-17-11 12:54 PM EST --
I just checked this thread and found your question seven months after you asked it. Sorry for the late reply but I wasn't notified of your question by e-mail like I normally am.
The pad I used was a Therma Rest 3/4 length standard thickness. I would also place my wetsuit underneath it for added padding. This also came in handy for leveling a small sleeping spot on an angled beach.
As for the cameras, on land I used a Sony Cyber-shot and while paddling a SeaLife ECO Shot waterproof camera. I have more information about these cameras on my web site if you need further information.