Waterproofing a half-hood?

[Alaskossie]

I have a half-hood or bikini hood from Softbitsforsevens. I have installed some carbon-fiber stiffener slats in velcro'd pockets in the hood, and need to waterproof the stitching, as well as the hood generally.

 

Nick at Softbits told me that they use Granger's waterproofing (which I was able to find locally), but despite my enquiries, Nick has not told me how they apply it to the half-hood.

 

Any experience or recommendations out there?

[Dave W]

I can not say how to apply the Granger waterproofing, But I used Scott guard in the spray can on my bikini top which is made from Cortex. Goes on even and there wasn't any color change. Dave W

[Zona]

These carbon-fiber stiffener slats are waterproof or not? because these can be stitched for better water proofing.