Boy this is going to sound stupid and my being from Boston probably won't help. What do you mean by "...I was followed home twice on my Harley..." ?? Followed by cops or by thugs wanting to steal it?
Does that happen a lot around where you are??
i'd assume followed by people looking to steal it, to case it out and check the security etc.
not sure about australia but it's something i've been warned about in the uk with certain types of bikes, anything that presents itself as a target for being stolen-to-order. best advice i was given if you suspect you're being followed is go to a garage (petrol station, not your own garage
) or small shop where you can kill 5/10 minutes and keep an eye on who's coming/going.