It's frustrating, but there doesn't seem to be any guidance anywhere about choosing a takeoff distance for a single-engine airplane, given available runway lengths. Multi-engine airplanes get all sorts of stuff for balanced field length, etc., but it seems to be the assumption that a single-engine airplane will use up all the available runway and, if there's a power loss on takeoff, you just end up in the weeds. Anyone have any input on this?
My (probably worthless) opinion as a low time (<200 hr) pilot is that I like to have about twice the runway I need. I am used to flying in the midwest, where there are usually multiple decent-enough off-airport options in the event of an engine failure. I'm guessing there are fewer options like that in your neck of the woods. So, half your smallest runway's length to clear a 50' obstacle?