Changing your mind is ok! Actually, one of my favourite quotes about yoga is by someone who just began a practice. He said, "oh, i think yoga is ok, but I'm afraid it might change my mind". No kidding!
Yes, I expect people surf in Goa, though I did not go there. I did not see real surfers in Varkala or Kovalam (tourist places in Kerala) because they are a bit more traditional. But big waves, and we did, as I said, do some novice body surfing. Varkala is also a good place for ayurvedic massage. http://www.mapsofindia.com/maps/kerala/kerala-beaches-map.htm