That's what we use in France :
http://lecam.nicolas.free.fr/ragot_mitraillette.pdf
a chain of 6 feathered hooks, one foot between, size 4, with red and yellow feather. If you can't buy it, make it !
Put a spoon at one end as a weight, works on fish too. Must be enough weighted not to drift to far away from tha boat (stay vertical and jig it).
Hope this helps !
Olivier