If you buy single strand wire (not the black coated stuff) you can generally get away with it. Just be carefull and dont kink it, it will break. Try both at the same time (trolling) and see how much difference it makes for peace of mind. Up here i always use single strand for trolling but use leader for casting at schoolies and spotties. When you are winding flat out usually you lip hook them but be prepared for lure losses anyway.