Paulo you are right designers have long since abandoned full keel designs when it comes to production boats that require cheap quick building. They also abandoned the stay sail and bow sprite. I don't know how many of you have been paying attention but they both are back as high performance upgrades. It would appear the older designers got it right the first time. I have owned many fin and full keel boats, after 25 years of sailing I find I sleep better in a full keel than a fin keel so that's my preference. A good friend just lost his half million dollar fin keel to a submerged deadhead, his boat went down in under 3 minutes. If you want to know the difference in strength between full and fin keels, don't ask the designer, don't ask the builder, don.t ask the sailor. Ask the boat yard manager who has to do all the repairs
on the boats, or at least the ones that didn't sink.