Assuming you are a solid paddler with a good roll. When shooting
photos it is an idea to have a paddle leash on your wrist. Lay the
paddle down and snap away. I am ready to drop the camera and roll up if
required.
My personal site is http://pages.ivillage.com/mcgruer This is an old
site that I have not updated for a while but there are some interesting
photos done with a Cannon wp camera and perhaps a Minolta 700. I can't
remember what some of them were done with.
If you are comfortable in the boat the photographic skills are the next
( only ) trick.