Howard left us quite the gift, an elaboration of the simple. Not so that we can become frustrated that we can't hit 'em like he did, but to show that even with limitations such as, no carbon, no aluminum, and in his earlier years no fiberglass! one can still hit pitched change out of the air!
To think of all the advancements in technology incorporated in bow design. Carbon, glass, Dymondwood, D/R, super-flex action wood, phenolic, FF-strings, CNC, Lazer straight arrows, etc... etc...
We don't see anyone slip shooting, {not snap shooting} the string and hitting like he did.
Myself included.