Anyone install a fixed mount VHF on their kayak?

I am rigging a new kayak and was kind of considering putting a fixed mount vhf and carrying one of the new standard horizon hx40 in my vest as a backup in case I get separated from my kayak. It is tiny and will fit in a pocket. I honestly hate having a handheld on my vest because its always in the way and if I put it somewhere where it is out of the way, I can't reach it very easily because my shoulder range of motion sucks.

I used to use a remote mike that I could attach on my shoulder.  It worked very well until it died.  The water-proof properties weren't as good as those on the radio.  Mine was a generic import.  There are probably better ones available.