"Of course, the real solution (other than for private copy editing) is not to use double-spacing at all. Universities, in particular, have no excuse for specifying double-spacing in submitted dissertations: LaTeX is a typesetting system, not a typewriter-substitute, and can (properly used) make single-spaced text even more easily readable than double-spaced typewritten text. If you have any influence on your university’s system (for example, through your dissertation supervisor), it may be worth attempting to get the rules changed (at least to permit a “well-designed book” format)." - Steve Koch