I am not in the habit of flying outside the POH "envelope" and I am particularly wary of short runways, both hard and grass. On both occassions I flew in (and out) it was to take a Stampe owner form White Waltham to view his aircraft that was being repaired there.
Both visits were on R24 and in the winter, the thing that did concern me was the power cables on the approach.
Getting out of there was fine and a correctly executed shortfield take off in a PA28 140 is very effective, especially on a cold winters day.
Regards
FBW