During a chat with Jack Connicks in Dema I realized I have been using a very useful control in Nikon cameras that really facilitates adjustments in the water, and would like to share this with you.
Under Custom Setting Menu -> f. Controls, there is an option 'Release button to use dial' (f7 in D7000). When it is turned ON (Yes), you just need to press the various setting buttons once (including metering mode, exposure compensation, flash mode/compensation, WB, ISO and QUAL etc), and the camera will hold it in the corresponding setting mode allowing adjustment by turning the front and rear command dials. When the adjustments are done, just press the shutter release briefly to dismiss the setting.
It is most handy when the Info screen is turned on and you can see all the adjustments instantly on screen. Of particular usefulness is that the AF Mode button is also supported with this function for the D7000 which is located in a rather awkward location. You can set the AF points and AF Mode easily with this function.
Edward