voodoo magic? no, its just a lil' thing i call.....

[CarribeanThunder]

I made this glitch:
Needs:
Staff
Dig Quest

Step 1
Go to the island for your dig quest ( Note: It can only be the OUTSIDE of the island so you have the access to the open water ).

Step 2
Find the dig spot and draw your staff ( Note: Don't use any skill, just draw it ).

Step 3
Dig in the Dig Spot ( Shift near the green circle on the ground ). As soon as you start digging, run as far as possible from the dig spot. Don't stop. If you get it right, you should have the following:

You will still hear digging.
You will still have the Shovel in your hand.
You cannot press Esc.
You can't use a Dinghy or draw a weapon.
You cannot swim.

Step 4
Walk backwards into the sea. You will not swim, and you will keep walking downwards. Soon, you won't see your character.

Step 5
When Step 4 happens, turn around, and walk forward. You should be going up as you walk forward. Keep going, and you might not get the "You need a ship to enter open seas"

You can go as far as desired. Enjoy.

[swashbuckler II]

Little typo/misunderstanding, You cant make a glitch, but you can discover a glitch.
And you can also do that glitch CarribeanThunder said with a cutlass, just do bladestorm, then dig.