Long course conditions vary greatly depending on the vehicle. Some made good use of it, some struggled. Chet's roadster put up some big numbers, the Strasburg lakester, made passes over three hundred and chewed up the rear tires approaching 350. There was traction to be had.
From the starting line to the two, there is loose salt on top, but hard pack underneath. It looks bad but provided decent traction. From the two to the three and a quarter, it is hard and smooth. From the three and a quarter to the five and a quarter, it is hard and bumpy. From the five and a quarter to the seven, the salt is very thin with mud patches showing all over. It does provide a usable run out area.
That is my assessment, hope it helps someone.