In article , Corky Scott
wrote:
snip

I convinced the owner to climb above the clouds for the trip back and
once we got above them (at about 7,500 feet), things smoothed out
dramatically. Silky smooth air. The owner almost never gets that
high normally and was surprised to see that he was limited for
manifold pressure. I explained that the engine was now producing
under 70% power, possibly 65%, and that he could advance the throttle
right to the firewall if he wanted to. He chose not to, he's very
conservative and still needs to fly the airplane some more before he's
comfortable doing a "John Deakin".


Your friend should contact the American Bonanza Society and look into
their Bonanza Pilot Proficiency Program (BPPP). It's on their web site.
It will be very helpful for him.

You don't want to cruise in a Bo' at 4500' over the mountains of
Vermont and New Hampshire.