First, anonymous tipster found that drinking milk with hookshot in hand and empty bottle on C shot the hookshot and created a new chain:    • Remote Hookshot  
Then, TheMasterZelda found that this trick just shoots hookshot in the same orientation and position it was in your hand (it was shooting the ground because it was held in Link's hand pointing towards the ground). So you can remotely connect to hookshot targets:    • Remote Hookshot stuff  
Then, I found that you can connect to 2 hookshot targets at once, and once you do, you can freely control yourself and cancel at any time.

This trick is still very very new and being actively looked into! Hope cool things come of this!