hazzard, of all the wild Lacies i've seen (which isn't many) i have found them to be close to creeks/rivers. Have you found that the Lacies you're studying stay within a certain distance of permanent water, or are they moving off into drier areas?
Also, have you seen any juveniles out there, or mistaken Heath Monitors for Lacies? (Not sure if Heaths are actually out there, though??

)