Bob,
I love that when you're shooting from the kayak, you are so low to your subjects.  I personally love that angle but at my age, getting "low" on terra firma requires that I also figure out a way to get back up  

.  On the other hand, you must have to balance the kayak while you're shooting and that's a bit like rubbing your tummy while you pat your head.  Great images.  Can't wait to see more.
Jim