I just reached the summit a little while ago. What a delightful little game! I still have some unfinished errands so I will go back, but I had to get dinner first.
Exploring this island brought back memories of my first time playing Myst, my first time in World of Warcraft, exploring Dun Morogh (well that game is much much bigger, but my first day there was much like this game). So many fun little places to discover, things to find, people to talk to—without any damn achievements telling me what I had to do!
Really the only thing I felt a desire for—though not a need—was a good map of the island. It's just how my brain works, and really after enough time I knew my way around well enough. And yet I kept finding things on little side trails I hadn't seen before, or on ledges I hadn't come across! Thank you so much for making this game.
Updates: I have now finished everything except the race to the top, and finding the last fish in the calm river waters. I've been up and down both rivers and haven't found any waters that look calm. Hm! I am stumped. I also found the little island with the sun hat for sale; it is off to the northeast of the boat, for those wondering..
I now have 20 golden feathers and 2 silver feathers, it's ridiculous. Too bad I can't pick up the bones (or pick blueberries). I might keep poking around for that last fish, but I sure would appreciate a hint.