After running No-Convert you reboot to the destination volume to continue the installation of High Sierra.
This does not work for me. If doing so, the bar will load until about 2/3 and then the screen will turn back.
If I boot from USB (via F12) and then in the clover menu select "Install macOS" I am able to install High Sierra.
But until now I could not find a working configuration using Multibeast. I have an i5-6600K and under Sierra just using the IntelGraphicsFixup via Multibeast would do the job for me. But now under High Sierra if doing so I get stuck at boot with "kexts stall[0], (60s) 'IOResources'".
Note: I don't have any Nvidia card connected to my Mainboard. It is just the integrated graphics.