As Stated on page 22 of this report:

"While local residence restrictions have been widely implemented in Florida communities, federal research and Florida stakeholders reported that they may have unintended results. According to the U.S. Department of Justice’s Sex Offender Sentencing, Monitoring, Apprehending, Registering, and Tracking  Office (SMART) research has demonstrated that residence restrictions do not decrease and are not a deterrent for sexual recidivism. In addition, some research has shown no significant decreases in sex crime rates following the implementation of residence restrictions. However, residence restrictions do affect offenders who have to move or have limited housing options, particularly in urban areas. This combination can lead to an increase in homelessness, loss of family support, and financial hardship, which are all known to be destabilizing factors. Offenders who lack stability are more likely to re-offend".

http://www.oppaga.state.fl.us/MonitorDocs/Reports/pdf/1808rpt.pdf