Several years ago at the annual cold weather paddling clinic (launched from Pavilion Beach, in Ipswich), someone demonstrated a nylon cone-shaped shelter. It was not quite a tent, but rather something 2 people could get under for protection from the cold and wind while sitting on the ground and holding it down and over themselves. I don't remember whether it had guy lines and could be pegged down or if you could use a center pole. I just remember it was effective at keeping warmth in and seemed to be a useful item to have in an emergency.
I've been searching on the web for such a thing and haven't found anything like it.
If you know what I'm trying to describe, would you let me know what I should be searching for or, better still, send me a link?
Thank you.
David