circle hooks

Just a little update if you happen to be following along... After I yakked my bait out and dropped off right in the middle of some feeding freny and school of jumping bait fish...yakked back to the beach... Should have realized my bait was in a really good spot bc I took a 5 minute break to...

What kind and size circle hook you use when fish for spot, perch and croaker ? I understand you don't set the hook with circle, but how do you decide when to reel in ? THanks !