The OP said he was looking to tow it 5 miles- I'm taking it to mean that he's trying to sort a way to get it home from the place he buys it.
Maybe I misunderstood, but it sounds like everybody is offering opinions based on assumption that he's wanting to do this regularly. Not sure there's logic to buying another hitch mounted tow rack for a one time deal just to get a scooter home??
1980 Vespa P200E
2006 BMW R1200GS
2012 SYM HD200 Evo