The Ebike section is mostly full of thin folks.
did you see pictures?
Out here my rural LBS has been doing mid drive retrofits , on mountain and fat-bikes for hunters ,
for a few years.. surrounded by timber company forest land with Elk & Deer seasons ..
Now there are bikes built around the Bosch and Shimano STEPS motors
which require the frame to be made around the motor..
Otherwise motors go in as substitute wheels .. flat lands not much climbing,
broad brush .. go to your duplex town's shops & ask.. take test rides..
I could talk about brand names Trek is big on eBikes, this year,
they sell here , dealer sold trek since 88..
..../