i think that it could be said that every club has an instructor with a bad attitude at some point, but more often this is probably down to the perception of the student particularly if they have just had a bad lesson etc. However, i'd say that ill experiences are few and far between. From personal experience, i think netherthorpe is one of the friendliest airfields i've been to. It might also be noteworthy to say that there are two flying schools on the airfield so shop around...