Agree with VH-FTA and Cap'n Arrr - If you are there to build hours, dont instruct! Yes - Junior instructors have a tarnished reputation, and from looking around me, I can see why. More flight instructors are needed - but only those who are passionate about the job and aren't using it to take advantage of students who wont know any better until they find a good instructor.
Go hit the charter scene! And while you are in that mad rush to get those hours, don't forget to enjoy yourself!
Capt Mo