I have never played a Hermit, so hopefully there'll be a lot of good advice coming from experienced Hermits after me. I just wanted to being by asking, where have you tried training so far? Windraiders (Lower Ascent or Crossroads) is a common place to train for many jobs, including Rangers and Snipers. If you haven't already, give it a shot. You could also try some bosses, like Headless Horseman or Capt. Latanica (need help from a DK for extra HP, I believe). They both give really good EXP for single-target classes like Hermits. Good luck and Happy Mapling!
At Ghost Ship, assuming you are killing Slimys, you will get less than 0.14 EXP per HP (or damage done) Windraiders gets you 0.16 EXP per the same damage dealt. I am pretty sure this will turn out to be more efficient than your current training spot. In the meantime while waiting for expert NLs' advice, you should try Windraiders!
