Hello Guys
Top water is by far the most exciting way to catch leeries, especially when the bigger fish about. Genrally make my own plugs for leeries as you can experiment nicely with size, weight, hooks etc. You should be able to cast even fairly light plugs, 1/2oz up to 50 or 60m with well balance tackle. Fireline helps as does the rod and reel combination that you use. Good tip is to try and use the wind when you cast, this not necessarily meaning that you through downwind but that you can really use the wind to keep your plug on the surface giving it the most lifelike action.
My expereince is that leeries tend to take a little more aggressively when the plug skipping better and not ploughing through the water.