Hi Dave,
Good idea - look forward to your results.
Upon Neil's advice, i was trying this for a midknot in 200lb braid. The problem was, i had to sandpaper a really big area of the leader material because when the knot is tightened, the braid will slip. It slipped way past the sandpapered area to the point where i have to create an insurance knot.
Anyways, i would be interested on thoughts regarding sanding FC. Will it retain it's effectiveness or will it be rendered the same as normal mono- ie. when you get a knick in FC i was under the impression that this will make the FC loose it's low visibility properties by letting light in?
Cheers,
Luke