I made use of that technique, in both standing and prone.  I can't blame my poor performance on giving it a try, my problem is I can't see my front sights.  Big difference between in the shade under the roof of the bench and out in the sun.  Best my higher and wider front post got was when it resembled an exclamation mark, and that was when it was above the target in the blue sky!  Same was true of all my iron sighted rifles.  I need some variable focus glasses, or something that goes on my glasses that'll alter focus.   To my shame I have to admit, I enjoyed shooting that pogo stick-like thing with a Ted Williams scope on it more than the rest of my rifles.  Did much better with it too! 97SF, 96-3xRF, and nevermind the offhand score. A little offhand practice and I'll likely be using it more than the others.