  We calculate the trajectories which maximize the Unruh effect, mode by mode,
when given a fixed energy budget for acceleration. We find that Unruh processes
are most likely to occur, and therefore potentially best observable, for
certain trajectories whose acceleration is not uniform. In practice, the
precise form of optimal trajectories depends on experimental bounds on how fast
the acceleration can be changed. We also show that the Unruh spectra of
arbitrarily accelerated observers contain the complete information to
reconstruct the observers' trajectories.
