Jim
There are polars for a few multihulls, H16, Tornado's some A-class's, and a few others. I have some EXCEL tables but I am not sure what I did them.
Attached is a link to a web article that includes links to the data available on the web.
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On The Wire Try searching "Tornado Polaris" and "Hobie 16 polars" for more data.
I seem to remember that that some of the data was collected as kinda of "fun sailing day". Different boats, sailed individually through a line to marks set ~10M out while someone recorded wind speed, direction and time. I think the boats were supposed to hit the mark so they could get an accurate time. I do remember the event was called due to light air and heavy drinking