Page 120 - Nate Fitch, Ron Funderburke "Climbing Knots"
P. 120
Closing the GriGri to liberate the brake hand. Constructing a materially redundant master point.
One gesture of the rope destabilizes the knot, but it is backing up a stable GriGri. Knot cannot be destabilized when in use.
Quick to tie, quick to untie. Quick to tie, quick to untie
Defaults to strength of the GriGri. Same as an overhand or figure 8 but the BHK is tied in two or more strands of material, increasing the strength.
Familiar overhand with a bight. Creating a Master Point Looks like a big honking knot. Often has signature loop to manage.
GriGri stopper (overhand on a bight) BHK