Black boats are hot. Just in case you didn't hear the first time.
IF you are landing on beaches...When you sand the keels mask an inch either side and butter on a half inch of resin/glue/filler mix. This will take several shots. It is for a sacrificial surface.
Have an anchor bag made and as much as possible anchor the boat rather than dragging it. Easier than dragging and the boat won;t start to sink at exactly the wrong time.