I do adjust my stake sometimes if I expect some bonus free spins to be on the cards. It does not get close to $30 but it is usually much higher than what I would regularly stake. It works out some of the times and in some others I just ran through my total balance withing a few minutes. Stuffs like that make playing slots less monotonous than it is regularly.

It will be an incredibly lucky day if a user mistakenly selects a much higher stake and hit the bonus round that time.