After defeating Hoga, Ackster went on to fight the other islands' champions. Now that he had one gold pin, he didn't need to toil and take each island step by step. He could directly advance to the island's prime arena and request a duel against their champion.
Ackster gathered gold pin after gold pin as he went from island to island, not wasting any time. The only thing he did while not fighting was travel, train his mana, or think about each fight and visualize what he could have done to end it faster without changing how much raw strength he used.
He processed each fight and opponent and compiled what he learned from them. Some fights, like the one with Hoga, were straightforward and were decided as soon as Ackster got the upper hand. Other fights, including the fight against Kari Island's mage champion, were a little more difficult.