The carp in your lake are really line shy (which carp aren’t these days?) so you want to use a backlead to pin it down to the lakebed, but do they do the job as we expect?
“Backleads will only pin your line to the bottom if there is a clear line lay between the backlead and the main lead,” states Rob Hughes. “Any weed or obstacle will cause the line to lift up and create a zigzag in your main line that will almost certainly affect your indication. Backleads are great when used properly but most of the time they are not.”