I would have to disagree with that a bit Spaceclam. True it won,t allow you to fly slower than the stall speed for that airplane but will provide more drag to allow for better decelleration in the approach to allow more control of the approach path even though the stall will come at the same speed.

The reason is a multibladed prop or for that matter a paddle bladed two blade is they increase the propellor disc solidity ratio. A high solidity ratio will produce more drag when windmilling than one that has a low ratio. Sorry for tech stuff but it is a fact.

John