Your manual will probaly tell you which side you should carry it on. It looks like it is upside down because of the flats in the casting they sit against the ground. I think it has something to do with the oil in the motor running to places it shouldn't.
Just looked at the next pic. If Honda says handle down then it should work just fine
Sideways Honda
Here's another option to leaving the motor on the dinghy, but using a swivel bracket to turn her vertical when the dinghy is upright on the Weaver Davits: https://www.adventuremarine.net/product-catalogue/index.cfm?ProductID=3&do=detail
