I was sailing on an Etap 39 this weekend and had a very scary situation. The wind was a steady 20 knots with gusts of 25 and 30. We were on a collision course with another boat. The other boat did not see us so I turned the wheel to head off the wind and the boat did not turn. In fact I turned the wheel all the way to port and nothing happened. The boat would not react until we released the main sheet. Later while attempting a jibe the same thing happened and the boat would not jibe until the main was eased.The captain said any boat will do this if the sails are not balanced properly and I should have told him. Well the wheel felt perfectly balanced to me. I was steering with a couple of fingers and the only time the boat would round up was in 25 knots or more. Is this normal of a larger boat? My Pearson has never done this. I think it is more a design flaw of the ratio of rudder area to sail area. What do you think?Tim R.