Lots of discussion on this concept on the boards! RexW: Re: Over lining? Originally Posted By: Jim Ford But I have seen posts claiming that the author overlines all fly rods. Beware of that guy's advice............. I agree with this comment. The person giving that advice may not be fishing the same way you are. There is no "one size fits all" for up lining or down lining a rod. Personal preference, equipment, wind, fishing conditions, casting skill, and fly size can all play a part in the decision of what line size to use with what rod. Here's an example, when the bass are holding close to the bank and fishing from boat, a 20 to 30 foot cast may be all that is needed. Well, a 9 ft rod + 8 ft leader and a 30 foot cast means that only 13 feet of fly line is outside the rod tip. Up lining a size or two to a heavier fly line can help load the rod and make casting large, wind res...