Are you calling the ”hitch” the knot, or are you referring to the knots the carabiner runs through and the length from those to the hitch? I too don’t have the correct answer. I know from trial and error (safely hanging in my basement) the longer those are the harder it is to get the hitch to tend, but it shouldn’t change how it bites. Are you running the swabisch or Michoacán? I’m running a short bridge, so it’s not as big of deal for me. Even still, I’m keeping mine pretty short, plus running my 11mm tether back through my biner to serve as tender. The actual loose tags coming out of the knots on the biner are at least 4-5”. I can grab the tag, and it comes out the other side of my palm. I’ll take a pic of my setup tomorrow.