Van's Slip Offs ?
I was a kid when I first traveled to the races with the Bean Bandits and they always had a lot of help.
That was before VHT and they smoked the tires.
If you were down on power,or only had 1 gear left, often they wiped the tires with an oil rag. I still have 1/2 a bucket of Rosin that "Dandy Dick Landy" left behind at Bee Line. It was years before I saw him again and he was at the Auto Parts in Wendover getting some clamps to fit the "Flat Fire".
When they had you back up the cars, did they dress you up like a girl? They had some really ugly ones.
Oh Wait, this is about safety. The first "Scatter Shield" I saw was !/2 a tire that was cut to fit the bell housing and tied on with a rope.
"It is a small world, stay away from the edges."
LOL