forget seacliff and try henley / grange / tennyson / semaphore the rig you are using is right , i use a size 6 hook running sinker rig , 1 hour before high is ample and fish into the night , i have found they like it once the sun goes down and a bit of wind puts em on the bite , dead flat calm conditions make them a bit timid on the bite. FRESH and i mean fresh , non stinking tubies are the bait to use , i found if they have that stink to em even oif they are still live , the yfw dont like em as much. Dont cast out far , they are right at your feet.