How to switch power ups when playing solo?

[Strava]

Playing Desert Adventure. Got to hole 10 Climb the Tower. This hole can only be completed using the rocket power ups. BUT I had unintentionally picked up a power up on a previous hole. How can I use / get rid of that power up so I can use the rockets?
If the only answer is "don't pick up any power ups before hole 10" I don't know if that is possible. There are so many in the first 9 holes to avoid.

[Strava]

OK, got it. You can only activate a power up while your ball is moving. Now the trick is to not sabotage yourself ;-)
I still can't complete "Climb the Tower" tho, as the rockets seem to send me off in random directions.

[skpManiac]

It's all about the timing with the rockets.

[skpManiac]

It would be beneficial for many holes like this when a power up is needed, if, in the lobby we could add an option to always collect a new power-up that overrides any we already have.
There are loads of holes where this would help and it would also stop people holding on to a specific power up :)
Also, random power-ups on holes that have none would be good to have.