Hey Rob,

I'm using this knot with spinning tackle primarily.

10# braid(2# diameter) to 10# P-Line fluoro
15# braid(4# diameter) to 12# P-Line fluoro
20# braid(6# diameter) to 15# P-Line fluoro

For fishing flukes on baitcasting gear I often use 20# or 30# braid to 12# or 15# fluoro.

I've yet to have any problem with these diameters. I'm typically using techniques where a pressure set is adequate. I haven't tested the impact strength of this knot on a hard hookset with heavier tackle.

This knot comes through the guides relatively well. I trim the tag ends pretty close to the knot and add a drop of super glue. I've found one key is to use a long enough leader that the braid to fluoro splice is on the reel prior to casting. This way the knot has momentum prior to entering the guides and results in a smooth cast. At times you may hear or feel the knot go through guides but it does not seem to impede casting distance.

http://www.calfishing.com/gallery/v/members/JIG-N-PIG/