I finally bashed down the scan data to a mere 900mb by keeping only the road and 2m either side of it, its clean enough to not need additional help from a physicall ridden kml, some points are tree covered but, i can "extrapolate" through those sections. I decided to take of my jewellers cap and be a little more forgiving on myself in terms of precision, so I think a more effective workflow will be to use RTB to get a "general mesh" use its tools to lift and drop terrain until it roughly matches the scan info, then finish the rest of it in RTB. the trees still worry me because the assets in RTB ore, well, wanting, and the assets I can find free on the web are mesh models, not crossplane, so after saving on terrain mesh id simply be killing it with tree mesh.
In terms of your comment.. ya.. not to mention the moss/litchen growth near the edges, the road more dangerous for that is "Ten Mile" up the top end of Putty, which is ALSO a worthy AC track to make. I have thrown one of my bikes down on the green there, slipped in the road verge on the moss, that stuff is CRAZY slippery. skip into about the 7-8 minute mark and watch the road colour change from black to tinge green...
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If there wasnt as much rockface etc, id have made this a project instead fo the nasho. but. baby steps. let me first figure out the trees i guess.
