I've found a ton of information on this site about how to get great milage on relatively flat roads but would like to know more about mountain hybrid techniques. Any high altitude hypermilers out there?

What is the best way to approach a hill from an FE standpoint? How about a 2,000 foot mountain pass? How high can I let the engine rev before the fuel economy really falls off (on a HCH II)?

On the downhills just coast as much as possible right? Anything else?

Thanks!