UV Knot Sense?

[Kent Lufkin]

One of my beefs with hand-tied leaders has been that when fishing 
sinking flies/lines, the knots occasionally get fouled with algae or 
other plant material, thus requiring a cleaning before recasting.

Someone recently introduced me to Loon's UV Knot Sense, a clear, 
thick liquid material that can be squeezed a drop at a time from its 
tube onto knots. It 'hardens' almost instantly to form a smooth hard 
shell when exposed to direct sunlight or a small UV flashlight.

Has anyone had any experience using this material to streamline 
leader knots and if so, how well does it work? Seems to me it could 
also be adapted easily for flytying to make epoxy-like heads, 
shellbacks or wingcases. Has anyone tried it for that as well? What's 
the life expectancy of the material?

Knot Sense is available at most fly shops and comes in a 1/2 oz. tube 
that retails for $6.95. The little (about the size of half a 
cigarette) UV flashlights are also available for about $12 (perhaps 
less elsewhere.) My daughter got one as a prize at a Halloween party 
but it recently disappeared :-)

Kent Lufkin