I suggest cutting back on the running line of a WF line or cutting a Dt line in half. To explain how this would work, check out the charts of the Orvis Fly line below


Orvis Fly Lines


The 5 WF Wonderline is 90 ft long of which 546" or 45.5' is the running line. So 534" or 44.5' is the front taper and the shooting part of the line.


Cut off a portion of the running line that you probably will never cast. Say your maximum cast will be about 70 feet. You can cut off the back 40 feet of running line. That gives you the a leader of 9 ft and a fly rod length of 9 ft added to the 50 ft of fly line so you can cast about 68 feet before the backing goes out the fly rod tip.


You can cut a DT line in line for less backing and have two front sections of fly line.