This is the best solution when you need to combine native SobiPro search function with Google Map and Radius Search Feature.
In my case, the website visitors use the Google Address as Radius center point (usualy only ZIP code), select one Sobi Field as second search criteria and the application will show the results on the Google map, only where they are located in this permieter delimited from center point to a specify radius distance.
I'm a newbie with Joomla and I just follow the installing and setup guide and everything has run very fast and easy. For creating the map You will need the Geocode Factory off course.
MyJoom.com team did an excellent job and very useful too.