We're on Vancouver Island, BC, and have a lakefront property on Cowichan Lake (Youbou). We have a road allowance that's used as a public boat launch beside us, and would like a tall (15' or so) privacy screen. It can't be really wide (about 5' wide max), there isn't room, and we don't want it to spread much on our side (though some spread on the road side is ok). But we don't want to be able to see through it. If we had more width available, we might have considered Leylandi cypress, but at the moment we're leaning to either laurel or bamboo, and the two types that are consistently mentioned by local nurseries are black bamboo and golden bamboo. This is a vacation property for us, so we're there in the summer but not the winter - so we need something that doesn't need yearound maintenance. Climate is typically very hot and dry in the summer (90 degrees F or 30+C is common), very wet in the winter, usually freezes at least once in the winter and often has snow. Can be very windy particularly in the winter. Being lakefront the hedge will get full sun for most of the day in the summer. Not a sheltered location. Soil isn't great; drains really well (no clay) but doesn't hold moisture well. So, over to the experts, we'd appreciate any advice on the relative merits of black and golden bamboo, or other suggestions if neither of those sound right to you for what we have in mind.