Yeah, i live in Norway. For most of the time i use slow intermediate "glass line" on shallow waters, but when the christmas cod is coming inn, I use full sink to fish near the bottom. My experience is that it`s depending on the speed, not particularly the hook size:) I fish sea trout with shrimps/scuds, and i fish them fast with many stops/dead drift. On the cod i use long clouser and i fish them slow. sight fishing cod is fun, try it:)