Question: how long of a surf leash?
Answer: General rule: Go as long as your board length. A general rule when choosing your surfboard leash is that it should be the same length (or slightly longer if your board is in-between sizes) as the board its being used on. For example, if your surfboard is 6'0, use a 6'0 leash. If it's 6'6 Surfboard, grab a 7'0 Leash.