The difference between the two is the amount of taper over the length of the entire line. For instance, a weight forward line has the largest portion of the taper in the front, compared to a double taper that has an equal taper on both the front and end of the line. Weight forward lines are generally the easier of the two to cast, but that's not saying that a double taper would give you difficulty. A weight forward line would give you more distance because there is more weight at the front of your line. Now, when steelhead fishing long cast don't really come into play, especially with a 10 foot rod.