Nicky,
I do a lot of trolling aswell as deadbaiting for pike,my no.1 bait is a copper and silver spoon,2-4 inches long,but if u can get a big 18 inch "HEAVY" copper and silver spoon grab it as it will bring pike up from the depths even in winter,i spent the last 3 day's trolling for pike in peaty water,kept getting jacks on various luminous small s deep divers,but once the spoon's went on the size of fish went up dramatically.....Try them and see what u think.