I think we walked all of the 804 trail but not all at once. Some of my post Walking in Yachats has photos from the section of the trail with visible houses. This is the part between Smelt Sands State Park walling north to the end onto a nice beach but not a huge beach like Tillicum which is further north.
This section of the 804 trail has a different kind of rock which is smoother. I suggest this site for more information and photos of the trail.
It was a misty day and it was beautiful out there.