The Crab Nebula continues its legacy as an enigmatic astrophysical object, displaying rapid and dramatic GeV flares that peak above the expected limit for synchrotron emission. Five significant events, to date, have been detected in total since the initial flare seen by AGILE in 2007, emphasizing that the flare events are not unique occurrences. The all-sky survey observations provided by the Fermi Large Area Telescope allow high-cadence monitoring of the entire sky in gamma rays. This allows excellent coverage for not only the flares, but also any ongoing lower-level variability, both of which can provide further clues to potential emission mechanisms for the flares. To better understand possible underlying time profiles for the GeV emission, we undertake a study of simulated LAT data. Hypotheses for the time dependence of the flux and spectrum are generated and the simulated and actual data are compared. Systematics likely to cause false variability are also considered.