Thanks Zoran,
A smallish ball sinker (about 8mm dia) running straight down to the head of the Pilchard was used, had to increase it once when the wind increased slightly. I find the best method is to cast forward of the boat, leave the bail arm open and let the bait just drift down, when the fish pick up the bait the line just starts peeling off at a rapid rate, give them a couple of seconds, close the bail arm and hang on. I find I get much better results fishing this way when conditions allow. You need to try and judge the depth and not allow the bait to get too close to the bottom or you start getting the rubbish, although I did get a couple of Seargent Baker mid water. Helped to have a heap of bait under the boat as well, I think.
Cheers,