Everybody for the most part (at least I know I have) has those days with zero's in them. If you come off the water with a little more knowledge than what you started with, then the day isn't a complete loss. I commend you on your efforts.
On a side note, spent the better half of the day on Tawak Sunday fighting the wind and left with only one short fish to account for. But, as like you, I found several different locations with warmer water.
Better luck next time.