I go to Maui on a frequent basis because my mother in law lives there. I’m not aware of any pool rooms with 9 footers (never looked that hard though- not the biggest priority when on Maui). There used to be a great sports bar called “the sports page” with 4 good 7 footers in Kihei. That unfortunately closed, but the Lava Rock down the road has 2 decent bar tables