Originally Posted by Faster
... and perhaps to offest some propwalk effect?
Ron, I'm not so sure. Like one of the other posters, my personal experience is that it might even aggravate the effect. I sea-trialled a C&C 32 while I was still working as a broker. It was only when he could see that I was having some difficulties that the vendor told me that he had a 3-bladed prop, off-set to port. The sale went ahead, but the vended bought lunch for both the buyer and me.
I lean more towards the theory about being able to remove the prop and the shaft without having to remove the rudder.
BTW, I saw your comment on the other thread, about Mirage 33's. I heaved a huge sigh of relief that we opted for a Mirage 29 with a shaft in the centre.