Re: Anyone Use Rain-X for Dry Fly Solution
First, thanks to itchmesir for the detailed drill-down on Rain-X... LOVE IT!!
Similarly in the past people have asked this question about Scotchcgard (as a waterproofer for flies) and it's not much different.
The only two universal substances and rules I know are the following:
If it sticks, and it's not supposed to... apply WD-40
If it doesn't stick, and it's supposed to... apply Duct Tape