Hi treestryder, I've documented the tag at https://wiki.openstreetmap.org/wiki/Tag:waterway=access_point . Not sure why it didn't show up in your searches. I've been experimenting with this tag (and using it alongside canoe=put_in) because I don't think canoe=put_in works well as a primary POI tag. `canoe` is an access tag, and using an access tag as a POI tag is nonstandard in OSM. A gas station isn't motor_vehicle=gas. Anyway, I'm happy to discuss further or brainstorm better tagging for this.