One of the guys over at the 230 forum has had his spray mist setup on his working for probably the best part of a year now. Swears by it.
He's just posted some video.
(...click here...)

Gotta keep in mind though that the 230 is an air/air cooler seeing the full brunt of the heat of compression ..ie: upwards of 180F. So the dT compared to ambient is quite high (maybe +100F).

In our case where the cooling water temps are lower and the dT compared to ambient (maybe +50F) not as high - is mist cooling an option?

Just wondering if anyone has one installed?