Rick - "Talador is a character from a book and is prone to fairy tales. Nothing he/she writes can be taken seriously."
Which fairy tale? And here I thought it was what someone who cuts down trees was called. I am a skeptic by nature.
Ahh well, did you ever figure out how to get the stern of your boat up? Nothing like pedaling uphill forever. ^^
I'll give you a clue, if you think of the bow like a wing and increase its prismatic coefficient it may help. Yours is too slender. . .
Talador
P.S. I also think you confused glide ratio of a sailplane (L/D) with the L/D of a wing. That 40/1 you referred to is for the whole plane not just the wings.