[ursa minor]

This is from Google Earth. Tis is correct, I believe the family name that now owns this property is Elkins. They've done a nice job of restoring the boathouse over the years, the main house is quite a bit bigger than it was years ago.

Again, no way to know if the Dagnino boat is yours but maybe a start. Sorry for not noticing your Illinois location and assuming that you'd know the local names.

As to the Barber Pole name, I've also heard the explanation that KPW has. When we were kids you could still see some sunken logs on the bottom of the channel on a sunny day. I'd assume that they're still there. Some of them may have been left over from the aftermath of the 1938 hurricane, I heard that a lot of logs were dragged into the lake to both float them to where they could be taken to a mill as well as to keep the insects from getting to the logs. Way before my time but that's what we heard as kids.