Jim, Your water is so ‘BLUE’ and clear ! Our local rivers have always been “too thick to drink and too thin to plow”.
Your pics of that old inboard has jogged a few of my memories. That motor style is rare to survive here and I include a pic of one I saw a few days ago used as decoration at a popular outside tavern. The boat I saw is very old and must have been some sort of wood and aluminum hybrid construction. When I was a kid I saw the remains of a few riverboat steam engines and even an old stern wheeler on the river banks. But those style of gas/diesel inboards around here must have had a brief use, or didn't survive well. My riverside cabin is near an old 1700’s French portage, a latter 1830’s + steamboat landing, then a 1940’s marina. So I may try some magnet fishing to see what lays beneath the muddy waters.
https://steamboattimes.com/images/artwork/currierandives_woodinguponthemississippi_vers2_1267x741toadd.jpgYour pic showing the large flywheel on that motor also reminded me that I have some old circa 1952 glow tether boats and motors in storage. I may just fire up an old Herkimer OK Cub .049 , or even the Mel Anderson Royal Spitfire .065 to get some little castor-oil-nitro fun memories.
Pic Royal Spitfire .065 glow