Background I broke my rib a few years ago. It healed in a way that it sticks out a little past the end of my rib-cage. I want to learn to surf, but it is uncomfortable to lay on my stomach on the board because of the rib. I would like to make a pad to relieve pressure on the rib that sticks out. I think a moldable material would give the best fit. It needs to be tough, waterproof, and resistant to corrosion by salt. I am imagining some sort of rubber. I plan to tape or glue this pad to my ribs. A quick internet search found that actors use a variety of glues for glueing things like elf-ears and mustaches to themselves. Question What are some options for a material that would make a good pad for my ribs? It cannot be too soft, because it won't provide enough support, but it also cannot be too hard. First time poster. Feedback is appreciated. Thanks!