Trident Grappling Hook Command

Currently with 1.2.13 you can use this command to teleport if you throw your trident.
Copy this into a Repeating command block:

/execute @e[type=thrown_trident] ~ ~ ~ tp @p @e[type=thrown_trident]

Also if you dont want to be annoyed with the chat being spammed by command output do these commands:

/gamerule commandblockoutput false
/gamerule sendcommandfeedback false

Also you cant cancel it once you throw the trident. So aim accurately.
If you figure out better ways to do this pls comment them below.
Also you cant target them with names yet so once you can i will post an update to this.