The lack of proper scientific data on the population size is the precise reason I chose this topic for my research proposal. We had to choose a subject that was interesting for us and in a field where more research is needed. I have read papers putting the population anywhere between 10,000 and 100,000 individual animals, but a real in depth study hasn't been done yet. I also want to correlate the most heavily populated areas with GIS environmental data to model what kind of terrain they might prefer as well as map the spread of the population following the 1995 Hurricane Andrew release and try and 'forecast' how far the population could realistically spread based on the natural history of the snakes themselves.
(Since I don't actually have to convince people to give me money for the study I can make it as in depth as I want too, which is fun for me. The proposal also has to be a minimum of 15 pages, so the more variables I add, the better)