Bukkit

Hey, i was wondering if it was possible for you to add a configurable feature were when you throw a grappling hook on the block your standing on and jump off, when it gets to the point were the fishing rod string would break instead of it breaking the player just sorta floats there, i got this idea while i was on a space ship i made and i put the hook on the block below me and i jumped off but i got to far and the string broke