I tried that one.
I flew the "Delta Wing" through 2 Spectrum computers via the RS232 modem.
Since in was prone to crashing, and tapeloading took 5 minutes, I hacked the program and saved onto a microdrive disc which both had.
It was a wee tricky, for the program was max size, meaning that you couldn't even mess with the display file.
Got through that one by using the lowest part of the display file for data, - it was the only part of the screen that was changed.
The program featured an all around cockpit view, and even the pilot's feet moved!!
Edit: on Microdrive, the program loaded and started in 13 seconds.
Did the same to "The Hobbit" BTW