Heinemann loved to design and tinker

From the Milw Journal Sentinel

...And he built three boats, and in 1946 used one of them to save the lives of five boaters whose craft had flipped over on a rough Lake Koshkonong.

...The family ended up using the mower - and the three boats - at their summer cottage on Lake Koshkonong, his son said.

That's where Heinemann and his wife were staying on Aug. 18, 1946, when the wind was kicking up 2-foot waves on the shallow lake.

...He also continued upgrading the family cottage on Lake Koshkonong.