I've found that both days are good. The first year I went I got there at 8am Friday, there were a lot of people not set up yet. Temp was in the teens with a north wind and snow. And the overhead doors were open. Now I don't go until after lunch. I have also gone on Saturday, it is usually busy all day, and you can usually get the price down some, too. Two guys set up there that I know, one sells chevelle parts, the other is Jeff at Bowtie bits. Jeff's against the west wall in the north end of the main building. Another guy, that I won't claim, sells mopar parts. Doesn't everyone have a friend with serious character flaws?