UG is the way to go for tippets and exclusively use Chameleon for the butt.
When the water is gin clear and the Steelies are spooky, I use Seagar's Grandmax flouro, thinner, just as strong as UG, also virtually invisible to fish. Go to Sportco in FIfe, best price in the country; 9.95 for 75yds!

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Matthew 4:19