Originally Posted by tdw
Weren't those things a bit popular with the early crop of single handers ? If memory serves Moitessier had one on Joshua and Blondie Hassler on Jester also.
Hasler used a canvass on frame device he call a "pram hood" because it unfolded like the hood of a pram. It was round and could be rotated. The idea was that you opened the hatch, unfolded the hood and rotated it to protect you from whatever direction needed, while you peaked out from behind it.
There is a description on how to build one in Practical Junk Rig.