I was at the game on Saturday and confirm two facts the Police Drone was in action but was down a long time before the helicopter arrived, Wind conditions were good from what i remember and the footage on this thread is old footage as the club now has large video screens at each end of the pitch which are not in these videos.
On match days the owner flies into another location and is then driven to the ground but unsure where the Helicopter waits not sure if it goes to Leicester airport and then goes into the stadium once the area has been cleared. The arrival and departure was delayed on Saturday as there was some crowd trouble after the game.
From the aerial footage that has been released I firmly believe that there was no strike with a fixed object as no area is cordoned off for the AAIB and a number of witness have confirmed that it cleared the top of the stadium with ease.