I think it depends mostly on how vertical your stroke is.
The more vertical generally the higher twist.
But 60 degrees works for most people.
45 degrees can be helpful in really strong side winds sometimes.
Just get an adjustable one and find out what suits you.
Follow the path of the independent thinker. Expose your ideas to the dangers of controversy. Speak your mind and fear less the label of 'crackpot' than the stigma of conformity. And on issues that are important to you, stand up and be counted at any cost.--- Thomas J. Watson
