Okay, so your 70% number is close to what I got using 3% loss per 1,000 feet, but then it sounds like you'll need a higher-than-desirable RPM to achieve that. Regardless, that's not really the information I'm after, but still good to know/learn.
If I need a 75% power setting for max cruise at sea level (say, a 200-HP IO-360, so 150HP), will the same horsepower be required to maintain max cruise (indicated) at 10,000 feet, for example? So, in that case, I believe I would be using full throttle as that would give me about 150 HP, or 75%...
Part 2
Having landed at Woodland before a few times, I wasn't worried. Well, maybe a little about departing, but not enough to keep me from landing there. There happens to be a giant tree there and I parked in its shade. It may have been better than being in direct sunlight, but it was still...
Part 1
The idea was to fly to the airports with the 6 shortest runways in Washington:
— Camano Island (13W): 1,750
— First Air Field, Monroe (W16), runway 25: 1,587
— Cashmere-Dryden (8S2), runway 25: 1,656
— Woodland (W27), runway 14...
On all my monitors (3 of them color corrected, 1 not), it looks black (although I didn't color correct the photo, so maybe the color isn't perfect). It's painted (and baked) aluminum. The paint is black.