Sometimes going so far beyond stupid leads you back to awesome
I think a fairing is pretty mandatory if you're trying to homage/spoof/riff on the bagger aesthetic.What about something smaller like this? (no windshield on these, either, right?)
I swear I have seen small bat wings in my internet searching for parts etc. I'll see if I can find one to link. It will look a lot better if you can find an appropriately sized fairing in a similar style to the Harley bat wing. It will be like a 3/4 size bagger.