For what it's worth, I have had some success (though not a lot of experience) using the method Thorsson outlines in Runecaster's Handbook for yes/no questions: you have a cloth marked/visualize the space the same as a "nine worlds reading", then cast the runes. You only look at the ones that land within the central "Midgard" circle (roughly 1/4-1/3 of the cloth, in the center, usually). You then count face up runes as votes for "yes" and face down runes as votes for "no". This gives you a nice crisp yes or no answer, but then you can look at which runes were face up or down to get some idea of what factors are leading to that answer.

I don't have any experience with either geomancy or horary astrology, so I don't know how it compares to them.