I eliminated the old 1958 Johnson kicker and went with a 2004 Yamaha 2.5 4 stroke I had in the stable.
Although my daughters dunked it in fresh water for 1/2 hour and then told me 3 weeks later, it cleaned up fine and started on the first pull. The main motor serves well as a tiller so the boat can be steered from the helm.
I also found out that this hull was probably built in 1969 or early 1970, therefore it was both designed and built (supervised) by Carl Moesly. Apperently, he left the company in mid 1970.