What's the proper prop for an aluminum Volvo saildrive? I have a 2001 Bavaria 40 Ocean with an Aluminum 3 blade prop on a volvo saildrive. I've had a few people ask why I have an aluminum instead of a stainless prop and started to wonder what the proper prop for this saildrive? I'm looking around but can't find the documentation I'm looking for on the net. I'm going to boat tomorrow and hopefully I can find a manual with the information in it. Any thoughts would be appreciated. Thanks.