This is 12m log trailer with autoload wood script (orig author Marhu). I converted it to FS19 and added function to move loading position forward/backward depending on logs length.

Controls:
Start autoload - KEY_b
Start unload - KEY_x
Toggle sides (L/R) - KEY_o
Show / hide loading position - KEY_y
Move loding position - movingTool - AXIS_CRANE_ARM