For your foam over exposure, use an incident meter, and go 2.5 stops under it's reading... Or narrow spot meter and 2.5 under. Coming from the film days that is, I use a sekonic spot meter.
I used to take quite a few waterfalls and other 'nature' shots on MF and 35mm tranny. Havn't been near the bush with my camera in years... Should do that, given that NZ is clean and green (Yeah, right). Problem is that I can't see them selling well, and with young kids it's a bit of a mission getting away to enjoy photography just for the sake of it...
Nice PS work Miz, I would have stuck that one on the archive drive and forgot about it.