Oh how I love working on California dive boats! No one expects you to put their gear together. You don't have to wrangle a group of uncooperative divers into staying together underwater. Everyone is usually freezing their butt off after two dives so you instantly become their new favorite person when you give them hot soup.... Anyways enough with how awesome California is...
Having worked as a DM in both cold water and tropical "vacation" locations, here's my $0.02 on what pisses me off. This shouldn't be an unreasonable request... I promise I'm pretty easy to get along with! I will even wear a bikini to work when the weather permits!
Don't lie to me. When I'm working, I'm not asking you something just for the hell of it. If I'm asking about your air, experience, comfort, depth, gear, lack thereof, or anything else it's because I'm trying to make a decision about how our dives should proceed. If you lie to me, you aren't making yourself look cooler, you're just causing possible unnecessary complications.
When I was first staring off as a DM, I remember having this young guy aboard who was all excited to be diving with us for the whole day. We found out quickly that he wasn't exactly the best at listening to pre-dive briefings and needed some heavy encouragement to stay with his assigned buddy (a regular on our boat who we knew to be a reliable and tolerant diver), but that wasn't what pissed me off. After his 3rd dive in a row of the day to 90-120 feet, we heard his buddy ask him what his surface interval was at. He said he didn't know, and his buddy told him to check his computer since it should tell him. He then told his buddy he wasn't diving with a computer, which was clearly news to his buddy and to me since he had told us earlier that he didn't need to rent a computer ($5 for the day...really?) since he already had one. His buddy approached me a few minutes later expressing his concerns about this since they had done multiple deep dives and pressed their NDLs fairly closely. Apparently every time his buddy asked him underwater what his NDL was he just said "okay!". So I went up to the diver and asked him how long his NDL would be for their next dive based on his computer. He finally admitted that he had no idea since he didn't have a computer, but that it wasn't a big deal since he was "using tables". I handed him a standard table and asked him what his pressure group was. Turns out he had never used a table before and didn't know how to read one. Needless to say he was done diving for the day. Why this pisses me off: It really isn't my concern if you choose not to abide by safe diving practices on your own, even though this only hurts the industry as a whole, but doing it on my boat becomes a problem when you get bent and I have to involve the coast guard, DAN, my insurance, and the slew of other people asking questions. Really a$%%$#$? What was the point of lying about that?
I'm sure there are other little things, but every time someone lies to me about how much air they have left, the fact that they have never done a drift dive, or whether or not they get sea sick (don't get me started on that one...) I get irked. Come on people! I'm going to respect you much more as a diver if you are cognizant of your limits and experience. Just my $0.02!