I installed rocket and tested it a couple of times; seemed ok, but haven't done anything more yet because on the next reboot a corrupted /opt stopped it booting - reboot-loop. Broken usb means I should be very thankful for backupmenu being able to restore it from an SD card. Not saying the rocket-install was a cause of this as I'd done other stuff since the reboot before, but I am slightly nervous of it now.