A spreader bar would be my first choice weighed down with a 6oz watch lead.
The snood (20lb floro) would be about 20" long with beads and a spinner blade attached and a size 1 hook or smaller if after the dabs
That rig would also be used for other species.
I would often have a wire boom attached about 12" above the spreader with a shorter snood or a hokkai attached
The baits on the spreader would vary, for the plaice a 3” narrow piece of mackerel on one side and lug or rag on the other often work best in Cork harbour though my best plaice last year, a 3lb fish, was taken on mussel.
If you’re after the flounder in Youghal bay then crab and mussel would be my first choice
Fishing on the drift is best done while holding the rod. I’d leave it in free spool and hold the line with my thumb a soon as a bit is detected I would let it line run free for a few feet to give it a chance to develop.
One to watch for is the “braidy bites” when going over stone or gravel ground the braid will cause the rod to nod a bit more often giving the impression of a bite. To check for a bite slowly lift the lead just off the bottom that will let you know what’s happening down below.
The other thing to watch for is the speed of the drift. If it is a case of constantly having to leave off line to keep the lead on the bottom that’s hard going and unless there are plenty of flats in the area then it’s often a waste of time
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