pb84,
Nice work. I hope your nephew was dressed warmly. -2 C in the Glens O'Angus must be a bit cool!
Good choice to fly with the sun behind you
"Contaminated runway settings" in a Maule AFM?
If everyone followed F900 Ex's advice, there would be little or no bush flying in many parts of the world.
There is a Transport Canada publication called
Light Aircraft Operating Tips (TP 4441E). Surprisingly, it doesn't seem to be available on line, but it is quoted in a very sad accident report here:
Aviation Safety Letter 2/2000 - Transport Canada
The publication suggests that the take-off ground roll should be increased by 10% for a runway surface that is rough, rocky, or covered with short grass (up to four inches). It further suggests that the ground roll should be increased by 75% or more for a runway with a soft surface (mud, snow, etc.).
PS I tried to post this reply yesterday, but for some reason it did not work. Since then the conversation has moved on and I see that F900 Ex's posts have now been deleted.