RE: sharpen or buy new?
The confidence you have to make the shot is proportional to the confidence you have that each and every arrow in you quiver is shaving sharp and they also fly right.
Carrying equiptment afield that is untested for flight and not shaving sharp is something a rookie would do. Not to mention highly unethical.
If a broadhead can't shave the hair off you arm what kind of bloodtrail will it leave for you to follow?
Broadheads kill by inducing hemorrhagic shock. The uncontrolable bleeding results in quick ethical kills and recoverable game.
Good luck hunting! >>>------------>