We had our Lobster Regatta this weekend 15km in 20-30knotts on a downhill run and had a 15yr old complete it on a 14ft Sundance. While I was screaming 3 to 4 km out to sea and back in he went straight downhill and wasn't that far behind my "A" really. But when he got to our rounding mark to do the last Km he couldn't get it to go up wind without centreboards, he was blown on to the beach where he dragged it upwind in the surf to complete the course. I give him a big tick for courage and am now totally sold on centreboards.
regards