You're welcome.
You can't just drop it into that submod if that's what you mean. With any two submods have a look at what files they contain; if any file is in both then dropping one submod over the other will overwrite the other submod's file(s) and therefore break it.
As far as I know it will work with the Alt Patch but you would need to merge them.
The ferry is just a ship on the river. It sounds like you need something more like Secret Forest Trails.