Just a suggestion.. When I needed to look around inside of my hull in those odd and hard to get to places, I stuck my digital camera in as far as I could reach and started clicking away! When transferred to my computer, I was amazed at what I could see now and move around to examine all of those tight spots. Not to mention with the Zoom feature on my computer I could get detailed closeups of any area I needed to check. Cheap, and easy...
Tommy