Someone correct me if I am wrong, but I believe the Scotty brand braid has the same diameter as the Scotty brand stainless cable.
I know a lot of guys use PP because it is cheaper, but if you are looking for the same "blowback" that you are used to with SS, this may be a good option.
I will be putting Scotty brand braid on the 1106's this off season.
I would think that because of the lesser amount of drag the blowback would be less, therefore trying to achieve the "cable angle" would be the wrong speed...I would think that you would need to learn your braid angle in relation to your speed to ensure your gear is working correctly??
So cable angle is IMHO not that useful an indicator.