every time one uses the GL 1d zone (3deepman) play one MUST understand that IF they have a LB B1 play, that the GL ATT 1 & 2 plays will be your demise.
the most important thing i ever did on D was to eliminate the ATT plays from my game plan unless vs the 2.3.0.
GLZ is best vs the 2.2.1 pass only player.... Even if the opponent mixes in a run, the GL use of the ATT plays can be a benefit (if you get yer ratios right)
I run hard Nickle vs the hitch, mostly because the other pass plays available require me to do so.
FWIW, N 1d, 2d, and 4/3 slb outside bltz are what works for me at less than 2 yards per attempt against.
Of course I still get blown the fruck up at least 1-2 x per game as a result of my choice to absolve the GLZ and 4/3 zone ins. Frankly the 46 2 deep is too limited to include on a practical, holistic defensive game plan basis, and will interfere with all of your other rules using 2dsecondary sets.
whenever we want to get sneaky, the options of eliminating plays that work to achieve it, or finding an easier path are the choices.
it is too hard to depend on sneaking a 46 or specific 43 just for 2-4 plays per game.
Pick your poison, do your rules based on play demand and not fear of the hitch.
It's far to risky to run a GLZ/4:3 (46) option vs the hitch unless the hitch is the ONLY pass play used for the formation.