Surface iron is a lure such as a Tady, kicker, or Salas that is lightweight. It sounds weird when you say iron but they are probably made with some process and alloy that make them light. If you go to a shop you can tell whats a surface iron vs a "yo yo" or sinking iron. The surface iron will be lighter than the smaller yo yo iron. They are used for fish at the surface. Heavy irons are used for yo yo fishing or to fish the lower column by themselves or with bait pinned on.
Flat iron probably refers to the flat fall jigs. I haven't used them.
Fly line means just tie directly to your leader.
__________________
-Beto
|