Generally you want to use the smallest hook required. The gap between the point and shank must be wide enough to fit
Jaw bone of the fish. 6/0 - 8/0 should be fine for striped bass. These are the ones that work best for me. I tried a few different brands and types. These inline circles had the best hook up ratio with most fish being hooked in the corner of the mouth. I use them for blood worms, chunk and live herring. I even used them with clams. I snell the leader to the hook. Just make sure the leader goes through the top of the hook eye. There are videos on YouTube about snelling circle hooks.