remember that bass fishing didn't get major till Ray Scott and B.A.S.S. Anyway, in those days when GM had over 50% of the market, a lot of the brass were flyfishers and duck hunters - think about what's available in Michigan, and what was conducive to schmoozing.
The Challenge TU chapter which was literally close to Paul Young's rod shop on 8 Mile Detroit and which had a lot to do with getting Bob Summers on the bamboo map met at one of GM's big advertising agencies in Southfield in the 70's and had the fanciest meeting rooms I could have imagined.
Maybe there is GM stuff on hunting and bassing? Bu somehow I wouldn't think there was a Corvette or Cadillac setup for carp. ;-)
tl
les