better then a fin keel boat. If you take any boat and toss it up against a reef in 6 or 7 foot swells very few steel boats are going to survive let alone a fiberglass or one made of wood. I've helped deal with grounded boats and have grounded my own a time or two and the full feel ones always have fared better. I helped a friend pull his full keel boat off a reef outside of Puerto Platta in the Dominican Republic one time when the side was stove in and the rudder ripped off and she survived. It's pretty bad when you rip the rudder off of a full keel boat when the rudder is attached top and bottom! A fin keel boat wouldn't have lasted an hour. It took us two weeks to get her in a condition where we could sail her to Puerto Rico to a yard for repairs. Then I was on a finn feel boat in the USVI's with another friend and we bent the begeezus out of a spade rudder once as well. I've run aground a few times in my full keel boat and never a ding. I've lost a lot of bottom paint but never a ding. Just MHO based on my own experiences.