Please give some advice on New Jersey beaches?

We're taking a week trip from Buffalo to Jersey to Brooklyn.





We want to go to Jersey Beaches for the first two days.


Then go to Six Flags the third.


Then driving from Six Flags to Brooklyn.


SO we need to know some FUN, clean, just overall nice beaches you'd recommend that are relatively close to the park.





Where should we stay away from? Why?





ALSO.





What SUPER cheap/gross hotels are near the beach that we can stay at?





Thank you!Please give some advice on New Jersey beaches?
The closest beach to Six Flags is Belmar which is about 25 minutes from the park. Also close would be Point Pleasant Beach.