can we extend FBA authentication to Windows authentication to enable CRAWL!!

Hi I have a problem, our sharepoint 2010 has a FBA authenticated site with Default zone and crawl fails because it cannot access the FBA site.

Now requirement is crawl is must to have and we dont have windows autheticated zone. I have read on internet that we can extend the FBA site to

custom zone with windows auth and crawl can access the site and search works?

even if crawl can search, can users able to able to query search from FBA Site and results will link to FBA site not windows site??

please help!!!