Re: Crosswind application(s)
This would not be a case for a rule of thumb, as for landing you will only require the crosswind component not the drift angle, and clearly here the crosswind is 25 knots. You do not fly a calculated heading on final, but a heading constantly adjusted to keep the centreline. Are you asking about landing wind components or about drift on a naviation leg? They are different although they can use one of the same techniques (the clock-face rule).