well hammer you may not see a visual drop on the mechanical gauge going thru the traps at 140+ mph..but its safe to say you not staring at it very long either...
....
another thing if anyone thinks oil in the pan doesn't move forward in the pan away from the pump on a hard deceleration...think again.
thats why many top notch racers use dry sump oiling systems..( for this reason)
again whatever works for you...both shut down procedures are used succesfully thousands of times each weekend across the country