My memories of club instructors are of some great guys who were to become mentors to me as an ,initially,nervous student.One who stands out from the rest was Derrick Murdoch,Sherwood Flying Club,who eventially sent me off on my first solo. I also remember the rude,arrogant one(no names no pack drill,) who would often climb out of the a/c after my lessons and go off and talk with his mates.No debrief,no encouragement. I suppose you are going to find this sort of thing occasionally but don't focus on the rude one look to the gooduns.