When in this state, your sword will be disabled, which is a good way to tell if you did the trick correctly or not.
This is a JP 1.0 exclusive glitch.
How to perform it
Doing a spindash is quite simple: Holdto charge you sword, and when the sword is charged release and press on the same frame.
Most people will slide their thumb fromto quickly to be able to do this consistently.
If you see Link start dashing, you were too early on your press of. If you spin but didn't get the proper glitched state, then you were too late on your press of .
Another technique is to roll your thumb clockwise fromto - if done like this, and you see that Link starts dashing, you have the opportunity to roll your thumb back to to attempt it again.
IMPORTANT: Don't face a wall or similar, otherwise theinput will make Link try to grab that instead of dashing. That's why we face up or down on stairs while doing this trick.
You can cancel this state by pressingto start a dash, screen transitioning, or jumping off of a ledge, to name a few.