If many surfers start doing this, you would soon be able to check [close to] real-time surf conditions from anywhere in the world by simply going to the website.
It's kinda crowd-sourcing of surfcams (coz those don't really deliver)
Ok, I just really don't see the incentive for most (i.e. 95%+) surfers to do this, for various reasons including: crowds at their favourite waves and no mobile signal at remote spots.
In general, surfers don't want to help other surfers find the best spot of the day. Once you're there it's different, and many surfers are really helpful/friendly. But hardly any will say "this spot X that you've never heard of is going to fire today", especially when they know you'll head to the big town beach break away from them ;)
I know surfers that'd give me a lot of shit if I posted video of a spot firing. I know I might do the same if I found out ;)
My suggestion would be to make this a private group thing. Create a, ahem, "circle" of surfers and share reports with them.
It's kinda crowd-sourcing of surfcams (coz those don't really deliver)