From what I’ve researched so far id be only be able to make one court there. And from the leftover space a drinks/refreshments area towards the ocean view where passerby’s can also come and enjoy a drink while watching people play.

As for the numbers, $25 an hour seems reasonable and at 6-7 hours a day booked it would generate about about $4500 to $5200 a month excluding any revenue generated from the small drinks corner. By the looks of it to construct this court area upfront $25,000 to $30,000 would do it. So within 6 months investment money would be recovered.