Difficult to talk to people. Maybe the regions could be larger.
I would recommend changing the mast controls to one of the following:
When the mast is pressed down (Input.GetButtonDown), the mast toggles on or of.
If the mast button is being held down (Input.GetButton), the mast opens if it is not already. If the button has been released for X amount of time, then it closes.
Camera maybe should gradually move back towards the front while sailing.
I accidentally off the map and then got teleported kind of far away back inside.
I would probably copy the controls for wind waker a lot since they designed and playtested it a lot more than a solo dev can, and then change it from there.
