Large (relatively) painting for Crescent Bay

I started a large (26x32) painting for Crescent Bay where I painted on site near it earlier this month (opposite side of salt creek campground). This is the view toward west. I kind of know I need to use cobalt blue at the end for the color of ocean, which I haven't used for years. But at this moment, I'm just trying to place bigger shapes on the large canvas after putting on purple under painting and very vague drawing. It would take some time to just cover the entire canvas with base colors & shapes.