Remove the ignition keys and place them under the door mat (they'll never think of looking under there...clever, huh?)........You forgot to list that option
#4 sounds like an interesting solution.
...but, doesn't the Mk1 Rocket3 come with an immobiliser as standard ?
On the plus side, I bet there aren't many people capable of lifting such a heavy/large bike into the back of a truck, so they're more likely to try to push it/ride it.
You got me thinking now.....hmm....let me see now.....Aha!...Got it! ........Paint the bike fluorescent pink......That will narrow down the thief demographic.
...No, no......Don't thank me. That one's on the house.