im not sure you can do much on oahu but kauai is small enough to regulate i think. stop mega hotels, stop busses, use electric scooters to get around. every day that the registered owner, and it must be a person, not an llc, trust, blind, llp, corp c, corp or any other dodge, couldn't prove they were were actually living in their house, mansion or retreat or estate, a 1% tax per day is levied on the assessed value. you could waive it for people earning less than a living wage for kauai and renters. you might also charge $500/day tax for tourists. lots of rich asians would just love to not have to rub elbows with poor people from alabama or oregon. stop believing the lies the rich feed you about growth. people on the bottom dont benefit from it.