[mshac]

What you have to understand is the approach glide path and obstacles.

A 3 degree glidepath is about a 1:20 slope. So if you cross the 50' obstacle at 60', 60' x 20 = 1200'. You effectively have 600' of runway available on a 3 degree glidepath. This can be mitigated with increasingly aggressive glide paths.

Lets say you're Chuck Yeager with a full Robertson STOL kit, and you plan a 6 degree glide slope - the ratio is now 1:10, so 60' x 10 = 600', leaving you 1200' to land on. Remember to add 10% to both take off and landing distances when operating on grass.

For takeoff, ANY engine trouble after rotation (V1 for airline types) and you will be in the tree line for certain. Balanced field length calculations are critical.

Check your books, this is a tight operation. Its well outside the norms of safety for most Skymasters, and most pilots.