The tiger holds 寅, three to five — light coming but not arrived, the hour the day's first momentum appears. So the tiger's nature is ignition: not the most durable, the first to move, and moving without hesitation.
You'll recognise it here: you'll act before you're fully certain, and the hit rate looking back isn't bad; authority isn't naturally persuasive to you — you need to have seen it yourself; and your anger comes fast and clears fast.
Running well, the tiger is whoever breaks the deadlock: everyone waiting for permission, and you simply moved, so the situation came alive. There's no substitute for that role. Blocked, it goes two ways. One is spending the speed on small things — full force at everything, so nothing is left for the one that mattered. The other is moving and not clearing up, leaving more mess than you solved. What the tiger practises is the finish: not slowing down, but going back after the charge to reconnect what got knocked over. That's what turns the burst into a result.