I'm most jealous (albeit MOST happy for you) vis your making (hopefully) the trip to the Everglades. From what I understand, though, Otto has gone into both semi-retirement mode -- they got a new pup with Otto being its instructor. A challenge they're having is they profess the new dog will break any/all records retrieving an Iguana dropped and for the most part, perhaps, moving. But, Python Cowboy indicated if the Iguana is just lying there, quite dead, it seems invisible to the new pup. They're hoping Otto educates him!
In any case, I do hope you go; get lots of Iguanas and take/post LOTS of photos!
geo