Hi,
My best experience with fishing Nagroor, was during foggy time, with current going down or up, using shrimp that contains orange color. When the sun goes up, they do not eat that much, however, during foggy time you will not have a rest.
Some poeple use the small crap that you can catch from rocks on the beach as bait too.
If you are in emirates the best location is ICAD city after Mussafeh - Abu Dhabi, main fish there is Nagroor. There is another place call Al Arraym, after ICAD city, but from the main road to Mirfa.
Regards,
Mohamed