Now that is a truly super shot Allan and worth braving the conditions for. I would be tempted to cut a bit of the top of the tree off to bring the eye onto the water a bit. I love the roots and and the lead lin you have create using them and the stormy water and to me the horizon forms a perfect mid point that I'd try to exploit. What do you think? B&W and the tone suit perfectly and give far more ferocity to the weather than in the colour version.