Re: Spade rudders vs blue water passage making
Yes ,rudders of any kind are often underbuilt but a rudder well built on a skeg is far stronger than one without a skeg. The advantages in peace of mind of overbuilt rudder fittings on an overbuilt skeg far outweigh any disadvantages of doing so. The weight difference is that of an extyr case of beer or two in the stern. While spade rudder boats do a lot of offshore cruising , I would not feel safe cruising in one ,over a boat with a well built skeg and rudder fittings, especially with all the Fukashima debris floating out there.. A low aspect ratio skeg can eliminate the chance of fouling your rudder as well.
Brent Swain, Boat designer, Builder, and author of "Origami Metal Boatbuilding"