I read that book too and looked into a variety of options for a sighter in the middle of the leader. The one I settled on and have been very impressed with was an Umpqua tippet material with alternating two foot sections of bright red and bright yellow. They are both extremely bright and visible, but as was suggested above, I think the greatest utility comes from using the two colors together. I've been cutting sections off the spool of about two feet in length, with one foot of red and one foot of yellow in each. Works beautifully.

http://www.cabelas.com/catalog/produ...ductId=1409658