Skate is one species I have never been good at catching, A skate was one of my first fish I caught Surfcasting but it was not until last month that I caught a second one, then a third just last weekend.
Others should be able to give more information, but from my experience they are more common during the winter months and can be caught in similar areas as rig. The bait which I have caught my last two on were Kahawai fillet. Being a winter active fish you would have to figure out a way to tempt the Skates without being mobbed by the Doggies and Cod.
Both were also caught during the incoming tide just before dark, but that is when I do 95% of my fishing so probably does not mean much.