The best workaround (imho) is just using virtual cards. My Venture X allows me to create a virtual card on the spot restricted to that merchant where I can also

The best workaround (imho) is just using virtual cards. My Venture X allows me to create a virtual card on the spot restricted to that merchant where I can also enter an optional lock date. If I want to try something, I just create a new card and set the lock date to the next day. Even if I forget to cancel, good luck charging my card :)