Its 16Wx32Lx8H.
Wowsie! Your poles would have to be about 30' long and very difficult to keep upright.....
I vote for the bowl on a pole for this winter. It is a sound idea with little cost involved.
https://www.amazon.com/Quictent-Outdoor-Wedding-Carport-Sidewalls/dp/B01DDBR1AO
This is about all else I can think of. By the cost it would maybe be less to do the plastic panels raised on one end. At 16' wide I would raise the one end by 10 to 12" for better slope.
I just don't know...... Maybe do half this year and half next...... They would have some good dry ground that way.