Actually, I liked it a lot. Not so much as a horror piece, but I used to spend a lot of time out on Florida rivers in my kayak and thought the descriptions of the landscape were really evocative. I'm usually a big fan of the unforseen ending, but a story like this proves that even when you know where you're headed, a good writer can make the journey worthwhile. My favorite - "all the riffle and dunnage of a quiet eddy." I used to spend a lot of time floating over a big crystal spring with sunken trees, watching the fish and pairing them up in a sort of aquatic dating service. When I got bored with that I'd just watch the water spin things around. Weird but true.