I don't like copper because u have to put it all out to be effective, like a set 200 or 300ft etc. lead core gives u more range u can do 8 to 10 or 12 colors. Also I think it would be a lot less drag while fishing from a kayak, and u need a leader from a ditsy so it would be harder to net. The leader on lead ore can go through the eyes of the reel so u can reel to tip way easier IMO