Hi men ,
I had a dabble with it , but with any sort of flow it lifts up , and defeats the object . Some sort of weight up the line , back lead / double leading can work , but even then if you watch it in tap clear water which i have the two leads can end up alongside each other . The only way i got it working right was having the back lead heavier than the front lead , people who do drawing of rigs etc must in some cases do so how tgey hope it works rather than from experiance .
I use leadcore a fair bit where allowed , because iv seen the Korda no trace system work how it should , top bead pops off and tge hook length swivel drops off very easy .
Hatter