You can also cut your double taper in half. You'l have 45' of fly line . more than enough for fishing tight places, along with the backing. The other half can be left on the spool it cane on and stored in a drawer until you need it. You just saved the price of a new fly line! With the price of fly lines the days that makes a lot of sense to me. If you need to cast 70' or more a WF makes sense.