You can tell by my testing devices, I’m the last guy that should be giving advice on electronics. But I have learned – to check the secondary, on a 2 spark coil, you test between the 2 spark plug leads. If you’re using a digital meter, it needs to be set on 20 K ohm scale.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.