I'm going to build a rail that we can pick up and move in and out of the water similar to what you see in the video below. However, instead of the pipe at the top, I'd like to do a flat rail with an upslope on at least one end to make it easier for beginners. We'll also be putting this in pretty shallow water, probably 4-5 deep, so it will be shorter (and hopefully more sturdy and easy to move) than the one in the video.
Any tips or suggestions? What kind of angle should I do on the upslope? Is Trex still the best bang for your buck as far as the top surface goes?