Ah.Ancient Geek wrote:Thought I'd add my few ore or put my oar in!
In the early to mis 60's the Merlin Rocket class adopted transom flaps after some very dramatic trials. They worked and we soon discovered the trick was not be too gready and to start sailing away on a close reach with not a lot of power applied and to slowly increase the power (By pulling in the sails.) and as the boat rose ans water went back it ought to be and only then to bear away onto a beam and then broad reach to complete the process and hand over to the self bailers!
They work in any boat, even according an Oympic Finn sailor in a Finn.
Thank you, AG.