Hiya Freddy !!!
I have read a few similar posts on other websites. The first suggestion was it's ok, if you remove the chain from the motorcyle - it's not good enough to just put the bike into neutral.
The other threads I found discussed "Tongue Weight".
And then last of all was discussion of what a particular vehicle is capable of towing.
So, you need to think about all three of those things.
Me - when I get my Smart, I plan to put a hitch on it, but for a bicycle.
There are a few places I visit (Joshua Tree, and Death Valley), that I would like to tow my motorcycle to, but for now, it's still just a wish.
Post up what you end up doing!!!