I'm seeing two different versions of this knot. Some tie a loop knot in the BRAID, wrap it around the mono leader, put the mono through the loop and cinch it. Others make an open loop in the MONO (no knot), wrap the mono loop around the single strand of braid, put the braid through the mono loop and cinch it. Which way is correct? Will both ways work or will one fail because it is tied incorrectly?

Don’t know the knot, never heard of it. 
Regardless, any knot you don’t tie correctly, whichever way it’s tied will fail. 
 

So to answer your question…

“will one fail because it is tied incorrectly?”…..Yes

 

 

 

 

 

Mike

1 hour ago, Mike L said:

Don’t know the knot, never heard of it. 
Regardless, any knot you don’t tie correctly, whichever way it’s tied will fail. 
 

So to answer your question…

“will one fail because it is tied incorrectly?”…..Yes

 

 

 

 

 

Mike

Yes, of course, but I'm referring to the 2 different versions of the Yucatan knot and are they both viable or will one fail.

2 hours ago, N.Y. Yankee said:

Yes, of course, but I'm referring to the 2 different versions of the Yucatan knot and are they both viable or will one fail.

Braid goes through the mono loop.