I have spoken to mooring officers who stated they can 'crane the boat out of the water' and take it away. Others have told me that they can give threats to this effect, but BW wont follow through/back them up so it's an empty threat, and the boaters know that ! the whole thing is just a mockery !
I sometimes think I should say 'I will pay if they do' pointing to those opposite !
I dont like breaking the rules though - so I just end up getting annoyed at BW - not the boaters , because why should they pay ? no one will do anything if they dont !