Thanks for that. I've been curious as to how everyone else does their thing. As mentioned I've also done similar things and had a spreadsheet setup , just wondered whether you had some you beaut way of doing it.
I may not be too far off your logic with race types. For me it was no maidens , and anything else where no horse was first up. Just found it hard to gauge first up records. Bit more exposed for sure helps , so it was middle distance and up for me.