Hi, Andrea! Still flying with the DC3? The way to obtain the “ground” view to interact with the locking tail wheel mechanism is to use CTRL+5. If you are using Duckworks mod should works fine! Try all the combinations. Like CTRL+0 gives you a nice passenger window view! Also, since it is very difficult to find those values online here are the correct RPM and MP settings to achieve simbrief profile specs.
400 bhp: Reduce manifold pressure to about 25 inches of mercury (inHg) and engine speed to 1750 RPM.
600 bhp: Reduce manifold pressure to about 30 inches of mercury (inHg) and engine speed to 2050 RPM.
700 bhp: Reduce manifold pressure to about 36 inches of mercury (inHg) and engine speed to 2350 RPM.
Tail wheel is for taxing only. When lined on runway tail wheel lock must be engaged so pedals move only rudder. Then small adjustments during takeoff and landing roll are possible. Tail wheel lock is under throttle quadrant . Green switch left seat side.
Read the FM for the C-53/54 or DC-3. The tail wheel lock does not uncouple the tail wheel as you suggest it simply limits the travel, for exactly the reason I gave.
You give the aircraft a third point far behind the yaw axis to give it directional stability until the rudder actually becomes effective. It is exactly this transition that is actually the most difficult to learn when going from a tricycle gear to a conventional or tail-wheel aircraft.
Aircraft without a locking tailwheel generally lift the tail up much earlier to get the rudder into the airstream and get that directional stability. Those aircraft are of course usually much smaller and with a much shorter fuselage.