I was taught split grade printing years ago but didn't pay much attention to it as I was quite happy with the standard Y+M techniques. Also the way I was shown was not at g00 and g5 and it used the crosshatch method which as someone pointed out in what I have read, doesn't tell you much about the whole image as the correct patch could end up anywhere on the image. So I have ignored it. I just thought I maight try the G00 and G5 method and see how it turns out for me so I started searching for info. There is basic info but I'm surprised there is not anything in more depth on the web. But as you say, its not going to be that difficult.