Some events say, no "single pole tents", but some are more specific. For example Fort Frederick rules specify "
Whelan’s, Bakers, Tipis, and single-pole pyramid or Hunter’s tents are not acceptable. " So a pyramid is a specific tent, and a "hunter's tent" is the same thing but with an awning sewn in. So..., from those rules, SOME single pole tents would be acceptable.
Tentsmiths makes a conical tent. It is NOT a Sibley tent, which was patented in 1856
and has a wall. The conical dates back to the Medieval era, and although some folks think it is some sort of "lodge", a tipi or lodge has multiple poles.
Tentsmiths Conical Tent
An even older tent is a pavilion. It's also medieval and a single pole.
Tentsmiths Pavilion Panther also sells a pavilion.
Panther Pavilion
IF you're not worried about events, here is the
Tentsmiths Pyramid These actually give you more space if you use two poles.
Panther makes conical one pole tent with a wall, which is their
British Bell Tent Not sure how Sibley got his patent if these were used before 1856, but that's for another thread discussion.
Some folks rig a tarp into a diamond shelter, using one pole. Some folks "fudge" the situation and join a long pole and a short pole with a hinge, and say their diamond shelter is a "one pole". When I asked the user and made an expression of "Huh?" when he told me his was a "one pole tent", he shrugged and said, "Well I don't lose the [short] pole when they are joined with a hinge."
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It's really up to your budget and comfort needs.
LD