Most things covered already, personally I use clock method applied to max drift for heading and thumb for distance/time. Agree that there are some that have you with head down too much, and for those with GPS - not all of us have one and, IMHO, even if you use one you should still know the basic techniques.
A couple of other tips :-
if you are diverting for weather you might want to do a 180 - to do this just look at the bottom of the DI - that is your reciprocal heading, turn onto this then adjust by DOUBLE the drift you had on the original heading - look at the wind arrow you have drawn on the chart to confirm which direction to apply it, you already have waypoints you have seen and head/tailwind will be the same as outbound but in the reverse sense.
To draw a line on the chart, put your pencil at one end of the line, lookout, look back in at the point you want to draw to and looking at that point draw your line - might not be perfect, but close enough and takes no time at all.
Last edited by foxmoth; 19th Feb 2012 at 16:21.