There is a product that is often supplied with new neoprene waders for patching small holes should you be so unlucky. It is a lot like silicone putty that you use for weatherstripping or sealing around a sink or other such thing. I have had some luck with splicing a line that had a bad injury, and I coat the splice with this stuff, then put the line on my back up reel.

If you have a steady hand and a keen eye, you could try sealing the nick using MEK ( Methyl Ethel Ketone ) it isn't really nice stuff, so do it outside with a little bit of a breeze blowing. Just a little of the MEK solvent on the nick, let it soak for just a little bit, like 10 seconds or so, then try to re-shape the vinyl line coating with a popsicle stick or some such thing.

Almost anything is worth a try to save a line at today's prices. If it is a DT, just cut it in half, throw away the damaged end. Lots of guys do that anyway, gives you more room for backing or shooting line, or whatever you are using.

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Jim Johnson