I read a thread elsewhere the other day about this subject.
Particularly good for skimmers.
It’s a double bulk rig.
Shotted with a bulk about 12/18 inches from the hook. A second bulk of 2 no.8’s about 4 inches from the hook.
Set the depth so the second bulk is about an inch off the deck.
Bites will be very positive. Either a lift or sailaway.
One tip is to use a body down float with a longish bristle with 2 colours on the tip so you can see small lift bites on those more difficult days, but essentially its for days when the skimmers are feeding confidently.
Steve