One of the biggest obstacles of buying a place in Thailand is trying to balance out the disparity in trade between high and low seasons.
In KO Phangan you have a high season every month. Between 10 and 20 000 party animals descending on your tiny island to worship the moon and devour buckets of vodka and lippo can only be a money spinner for the disconcerting bar owner. Bang out some pizzas and other fast food sludge to deal with the youngsters munchies and you will be rolling in it.
You dont even need to spend a wedge making it a classy joint. Just make the kids think they are getting a genuine hippy experience and they will come rolling in.