Mark,
There are many variables to finding, hooking and landing that elusive jew.
Firstly, find an area or beach that is renown for jewfish. They are creatures of habit and frequent the same areas.
Different areas are more productive at certain times, so make note of the tide and times you fish a certain area.
For example- my Jew spot is most productive when it's 2hrs before low tide and especially if this coincides with a low light period.
In short- know the area. Not every beach or hole will produce jewfish.
Bait- what works for some areas does work for others. So, what are they feeding on in the area you are fishing and get the freshest you can. Catching bait in the area you are fishing is a must. Be it beach worms, tailor, mullet etc.
The next thing and most important part, is TIME itself. Game fisherman are often saying they came home with zeros. This doesn't mean they don't know what they are doing or didn't cover enough ground. It simply means it wasn't their time!
To summarize,
Find a known jew spot
Fish different times
Use fresh bait for that area
And remember that the more time you put in, the closer you are to catching your target.
And when you do finally land that target, note down the time, tide, barometer, bait, weather, wind, rig etc. and then try it again when the conditions present themselves.
Hope that helps.
Cheers scratchie!!!