Dug out the spreadsheet
Whatever WC you have, add two line weights to the middle number of its rating to get the DT line that'll load the rod the same as the full WC head at 55'. A standard DT will load a little lighter and the spey DT will load a little heavier. So a DT-10 is equivalent to a WC 7/8/9 at the 55' mark.
Last edited by peter-s-c; 02-21-2005 at 06:28 PM.