bc,
i'm not knockin your method, just trying to explain mine. the goal, here, is to "get rid of the soap", as it were. for mild recoil loads, not so difficult. on kahuna loads, problematic.
my kahuna load: gun - 45lc blackhawk w/4&5/8" barrel (empty wt. 36ozs.), load - 325gn lbt lead bullet @ 1275fps 12 feet from muzzle. this gun kicks hard and fast due to the light weight and the short barrel.
i use a two hand hold, push/pull style with my off-hand thumb over my shooting-hand thumb. my stance is weaver (i think). grip is firm with both hands.
when the shot breaks, the gun's recoil rotates my wrists straight up pulling my arms up with them. i let this happen. the gun winds up vertical, my arms wind up around my ears and i usually have to take a step backwards with my right foot. i bring the gun back to level, cock the hammer with my off-hand thumb, and repeat as long as my arms can stand the pounding.
as far as i know, my grip does not move. i think the key is that i let my wrists break and don't try to force them not to break.
fwiw,
murf
p.s. my elbows are locked when i pull the trigger. i think the recoil unlocks them at some point in the recoil.