I did mine and it wasn't a huge deal. Lowes sells a kit that has a plastic caulk hook and silicone corner spreaders. I had many leaks that were fixed by doing the rail. Clean out all the old caulk and dirt. I wet a rag with acetone and went down between the rail and hull. Once it was all clean I used Lifecaulk and it is sealed great. I had a leak above fixed light in the aft berth by the sink, that one was stopped. Also a V-berth leak in the little compartments. Those came from where the anchor roller seals to the hull and back down to the rub rail. It also helps if you have a floating dock to keep her at a decent working height.