This is a nice overview of the dock scene. I can see that the long boardwalk out to the cabana is a strong compositional element. That said, there must have been a strong desire on your part to chop down that tree, or at least to move it! :) I don't know what the site restrictions are, and so it may not have been possible to move 3 steps left in order to reveal more of the cabana. Nice strong horizontal lines, good vertical elements, colors that puts the viewer into the scene.