I use the version for arma3. bypass the start procedure is no problem. I go everytime in this way (sorry for english mistakes I´m german!) :
Start as co pilot
when in air:
go to IHADSS Toggle
"right mouse click" to use the TADS over Optical Relay Tube
then i can move the IHADSS with mouse an zoom with ZB+ ZB- FIR or DTV
then over mouse wheel: "take control of Helicopter" and
Go to "autohover" to scout the area
when i go then to Optical Relay Tube, i can´t move the mouse in anyway
Fact: i can fly or take gunner but not both
is it a version problem, like you said ?