theres one in the pub i work, highest ive seen was about 820 or so.
theyre such a cunt though, its ALL about technique i recon. its definatly not random because the same people were getting the high scores time after time. i had a go, first go was a fairly pansy punch and got 750 something, the second one i fucking SMASHED the bastard and only got like 500 odd

wtf?!
gaff of the pub recons the bloke he rents it off gets 900s everytime and aint that big, so must be a knack to it.