Rings
Rings are exceeding more practical for most reasons you can think of-- the best being that (at least in theory) they can be removed with NO tools (use fingernail) and reused as well. Every time you re-flex a cotter pin with the pliers you are weakening it.Keep about a thousand of varying sizes on hand all the time.Also rings do not catch on anything and always give a boat a must more 'yacht-y' look than having ugly cotter pins sticking out and making every tunrnbuckle look like a boyhood go-cart axle.JC 2