Asymmetric boards: The one response to my IHS post was not partiularly enthusiastic either, suggesting that an increase in depth (aspect ratio) would yield greater benefits than any changes to the foil section. I suppose I'll remain with the 0012... Dyna Rig: Seems to have elements of a junk rig. I wonder where the close-winded CE lies? Might be a lot of torque loads on the mast as well as the bending loads already discussed...I sure like to see design ideas like this out there for discussion! One engine or two: I thought this topic would be of interest to power multihullers. Please let me know if this subject has been already exhausted in a previous thread. Thanks and BTW is there an equivalent forum for more sailing-oriented multihulls? Sorry if I got a bit off the power topic... --------------------------------- Food fight? Enjoy some healthy debate in the Yahoo! Answers Food & Drink Q&A.