I personally do not have a huge issue as I never point it to the sunball however if you use your gopro without framing on a shoulder or head or pole this may be useful if you have a polarpro filter
Underwater Video Tips: Improving your Polar Pro Red Filter for GoPro | Interceptor121 Underwater Video
Underwater Video Tips: Improving your Polar Pro Red Filter for GoPro | Interceptor121 Underwater Video