I'm not sure what the name of it is but Matt Herren showed it to me a few months ago. I haven't broken an fluor knot since.
1) double the line over as you would on a palomar knot and run it through the eye.
2) then take the doubled end and wrap it around the main line and tag end 5 times. The main line and tag end should be running parallel.
3) wet the wrapped line very good.
4) run the loop end back through the bottom hole just above the hook eye and pull it out about 3/4".
5) pull the main line and tag end tight til the knot cinches down. You might also have to pull the loop a little tight.
6) cut the tag end off the top by the main line and cut the loop off the bottom by the hook eye. You will have 3 ends, one on top and two on the bottom.
Hope this make sense!!!
Double clinch, same one I have been tying for years with braid and fluoro. I have yet to have a failure with this knot.