Thanks for the tips! I have a lot to go over now. It seems there is some disagreement between what depth is best for using the hyrdophone.. 20, 30, or 40m. I seem to remember 30m from SHIII. Any comments on this? Also, is the sound guy as good or better than what I can do myself? I never trust that he's hearing everything and since it's such a new campaign for me, he has little experience. Any insight is appreciated.