I definitely agree that 17 hands isn't any kind of sample at all. But if you do suspect someone is a nit (and have more information to back it up), then this is played badly.

I agree against an unknown a 3bet is fine. However:

Quote Originally Posted by Dean
and betting flop is best
Are you talking as played with villain 4betting you want to bet this flop? Or if villain would have just flatted the 3bet?