Everyone who flies the 'ole Lockheed tri-motor has their particular technique, Rumet, but the following works for me.
At the fifty foot radio height call...think about the flare.
At thirty feet, start a nice steady pull on the poll, so as to reach 10 feet with fair amount of backpressure, and it squeeks on nearly every time.
OTOH, a few Boeing guys try the Boeing 'push', whereby they relax backpressure just before touchdown, and just nuddge the pole forward just a bit.
This does indeed work in long body Boeing designs, but with the TriStar, if tried, the spoilers come up (DLC panels) and the aeroplane rather poorly...thumps on.
During automatic approach/land ops, the flare automatically starts at 50 feet, with steady backpressure, autothrust disconnects at 5 feet, and the aeroplane rolls on nicely every time.
Spoilers automatically deploy, the nose is automatically gently lowered, and the aeroplane tracks the localizer down the runway.
A superb design...well ahead of its time.