I dunno if we agree or not <img src="http://www.catsailor.com/forums/images/graemlins/smirk.gif" alt="" /> ... and it's a silly little point but you can align rudders perfectly straight even with ackerman built into the rudder heads. Only when you start to turn do the rudders become "mis-aligned".

But I think I see what you're saying in that even when you do align them straight (on dry land), when sailing, you have to turn them slightly to maintain heading...which then gives you a slight toe-in when under sail. I hadn't thought of that...hmmm...perhaps a little toe-out is in order <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />