That sounds like a good idea in two ways:
It gives you practice at visualizing the alternatives (which is always good if it can be honed to greater availability/​reflex by practice),
and by choosing those specific situations, you are automatically providing real-world examples in which to apply it; that way, it is a practical skill.
Ah yes, sorry. Payoff matrices are ancient; the Tarski Method is visualizing one in response to a temptation to rationalize. Edited.
That sounds like a good idea in two ways: It gives you practice at visualizing the alternatives (which is always good if it can be honed to greater availability/​reflex by practice), and by choosing those specific situations, you are automatically providing real-world examples in which to apply it; that way, it is a practical skill.