Edit: my math error,
Yes, 100 lbs loss of weight equals 1/10 of a second quicker, so 25 lbs loss of weight would be 1/40 of a second faster
The point I was trying to make was that my buddy would do anything just to go a little quicker
class racers are fanatical that way. They have to be. Like when Warren Johnson was questioned about testing vacuum belts. The guy said, at best you might only see a 1/4 hp.!
Johnsons reply was "yes, but if i do one hundred things to gain a 1/4 hp, I have gained 25,! And that, my friends, is why some dominate!