Hi JJ,
Contrary to the common belief that Ferox only live in the depths, research done on Loch Garry in Perthshire provides evidence that a greater percentage of their time is actually spend in the top two metres and they frequently come very close to shore especially during the hours of darkness.
The link show some of the details of the research.
www.coispa.it/poster/thorne.doc
Hopefully this will persuade you to try for these beast without the need for leadcore lines and going on the troll, its encouraging to know that they are certainly within reach of the shore and also even a slow sinker!! More often than not its just being in the right place at the right time.
HM, I recall the article last year but cant remember where from, but i do remember how he spoke of fishing relatively close to the shoreline.