Hello Henri Riehs. I saw that you modeled the Rio de Bóia as a ferry route. The ferry route tag - https://wiki.openstreetmap.org/wiki/Tag%3Aroute%3Dferry - "maps a ferry or water bus route on the sea, rivers, or other waterways. Ferries are a form of public transport that operate to connect road networks and to provide passenger service much like bus service”.

For river paddle craft, a better tagging scheme would be to assign it the tag route=canoe (https://wiki.openstreetmap.org/wiki/Tag%3Aroute%3Dcanoe) - which is a "route for canoes, kayaks, or other paddle craft”. The additional tag to identify it for rafting would be attraction=river_rafting (https://wiki.openstreetmap.org/wiki/Tag:attraction%3Driver_rafting). I wanted to see if you agree before I updated this feature however. Thanks for your time. 