True. I used to do this for several years when traveling the canal system with mad dogs, a mad mother and an expensive but really bad quality mid 90s Land Rover Defender and several bicycles.
It was quite interesting to see reactions. The more notable incidents were the failure of a potential car thief to break the steering lock followed by the garage callout man being able to do it properly, being reported to law enforcement for possible badger baiting and another incident where the rozzers turned up because someone thought the vehicle had been dumped and that there may be a dead body in it.
I would not do it again.
The pressed nature of real index number plates complicates things.
Much easier to get a fake car plate than a fake Boat plate.