Adman - I'm new to leadcore myself. I just purchased a 5 color leadcore set up from Fishkiller. I understand that that will get me down 30'. You can get down further by adding weight. You can add weight in the leader or on the backer line if you want. Adding to the backer line is preferred. You can fish it flat lining, off big boards and in line boards. I'm sure more will comment and I will like to see what they say also.