I began making my own rods about 40 years ago, at that time bass and muskie plugging rods and spinning rods. Took to fly fishing about 20 years ago. Always used "ceramic" guides on the heavier rods, so I naturally used light weight single foot Fuji guides when I started making fly rods. But - at least on light rods, 5 wt. and under, I don't see any manufacturers using them. I can't believe there is enough weight difference to matter, and I feel like my rods shoot line a little better. Am I kidding myself??