It wobbles about in a random manner without rotating.
Bake for 35 minutes or until the mixture no longer wobbles when the tin is gently shaken.
If the bat wobbles or if your hand is struggling to stay gripped to the bat, it's too heavy.
A good indicator that a chair is a poor choice is when a height adjustment won't hold its position, or a chair back wobbles or has too much give.
If it wobbles when you give it a light shove, it's not going to stand up to daily wear and tear for long.