Agree with most of the posts here. Stick to SOPs, but Know them backwards. These kinds of captains usually haven't updated their manuals for yrs, and then they become intimidated by the fact that you know the job, then generally give you a bit of legroom.
If all else fails, tell them what you think. They might be quite mortified to find that out. If that fails go upstairs, and good riddance to them.
