There are 3 Folding motors manufactured between 1929 & 1934. The 30’s OMC “Foldlight” model, sold as Lockwood, Elto, Sea King, and Evinrude were manufactured from 1930 to 1934 and have a magneto. The failure of the coils is common but the inexpensive OMC style coil can be substituted. Photos attached. In 1929 there is the “Folding Lightweight”, having a battery ignition, and the “Folding Sportwin” also known as the “Folding N”. In the two links below, I explain the differences in the two models. As far as which I would recommend, you can see I’m partial to the Folding Lightweight in the 3rd link.
https://www.youtube.com/watch?v=6SnKfIBzn8c
https://www.youtube.com/watch?v=i9NiPC126fY&t=29s
https://www.youtube.com/watch?v=l1ext_nsrYM&t=22s
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.