My husband was using this for surfing but found that it wasn't giving the best protection as he was still getting burnt and as its quite thick it was tricky to apply after being in the water!
I had to use it once when I forgot my usual spray on sunscreen and totally agree with the application thing, not pleasant to apply when wet and covered in sand!!
It did a good job protecting your skin from the sun and a good size to carry on your bag. However, I found it too thick and sticky and it is hard to apply evenly on your skin. Especially when you want to reapply it after playing on the beach.