Nomenclature aside, they're somewhat predictable in the sense that if the most dangerous rogue waves will typically happen in or near low preasure systems, and especially around strong currents, where you have wind-over-tide type nastiness.

So in the sense of trying not to die, avoid the Gulf and Agulhas currents, especially when a low blows through.

This coming from an amateur sailor. I believe freight shipping etc just plows through most weather systems in order to avoid delays.