So you already skate? That’s great! In my experience adult skateboarders are always more than happy to meet others. To be fair that goes for skaters of any age.
There should also be a bunch of "digital nomads" running companies and surfing in Bali that you could be hanging out with, and can stand their smugness... I mean if you specifically want to meet entrepreneurs. I'm sure there are even dedicated living communities for digital nomad surfers.