ROB-x38, in a slightly different direction, all I can add to the good material already posted is that a rough or short field technique is naturally going to be carried out on some sort of, well, rough field.
The point is, be careful when running up the power at a standstill. The vortices around the prop may lift the small stones found on an unprepared surface into the propellor arc with resultant damage to the leading edges of the blades. The damage can be filed away (by a LAME?? Pilot?? not sure about pilot, good CPL theory question, I suppose) but only so far.
Hope you find that useful !