Poll: Should police use unmarked bikes?

OFF THE WIRE
MCN
In this week's MCN we reveal the number of unmarked police bikes – the majority of which are superbikes or powerful sports tourers – that have been involved in accidents.
Sussex police, for example, have had 20 accidents in the last five years on unmarked bikes, 12 of them single-vehicle crashes.
But quite aside from the implication that some police riders struggle to ride unmarked R1s, Fireblades and S1000RRs safely, should they be riding them in the first place?
Is it a legitimate means of catching the small minority of motorcyclists who give us a bad name, or a dangerous form of entrapment?