most pilots that had gone through the US Army Flight School seemed to be of the notion that "all" friction was to be removed from the Cyclic and Force Trim turned off.....for their flying
During training on the Huey always used the force trim, flying Vietnam with all the formation work it was a pain in the derriere, so force trim off for all flying became the norm. Hand flying the 76 was force trim off since it was only done during periods of maneuvering, take off and landing, transit between those two points was coupled up with GPS nav engaged, can't say I ever forgot to put the force trim back on when coupling up.