Test Blows

[SimsPiano@AOL.COM]

Hi,
I've been taught to do a hard test blow on each string as I tune.   I've been 
wondering if the following might be a more efficient way to tune using a test 
blow.
1) Tune the entire piano using no hard test blows, but working the hammer 
back and forth to try to take all torque out of the pin once the pitch is 
right.
2) After the whole thing is tuned, go back and give each key a few hard test 
blows.
3) Now touch up whatever went out.
What I figured was that on trichords and bichords, you're only hitting one 
test blow per 2 or 3 strings instead of 1 per string, which means either 2 or 
3 times fewer test blows.
By the way, I use a SAT and start A0 and go up the keyboard.
Comments??
Thanks,
Corey