Very fun little game! I wasn't sure about the theme at first but it was a really well-designed world with great puzzles.
The only thing that threw me was that I'd already found the survey before I found the lure and the fisherman, so when he gave me the advice it was a bit like... 'yeah, and...?' Not really an issue though!
I also liked that you needed a certain treasure to open up the path to get another.