[Big Dave]

Thanks Phil. I thought I was on the right track. I intend to use about 25% of my bed length in a curved transition to my 1-in-5 slope.

Interesting. Mair's boat-tail shape is exactly that used by manufacturers of sniper rifle bullets. They call them "boat-tail spitzers." Of course being supersonic, they use very pointed forward sections.

All this is axial slope. How should I curve it laterally? Or should I? As I recall, aircraft canopies are rounded in both axes.