Another thought... Why have the bimini up at night?
At first I thought, "Gee, why didn't I think of that!"
Then I considered that my boat came with an anchor light that extends well above my head and over the top of the Bimini.
I do not open the Bimini at night, but that does not make it stick up any less.
It is all collapsed in the Storage Boot on the rear frame member, but the Bimini is still up high enough to walk under.
It is only 6 inches wide. but it is still 6 feet off the deck.
If I were to lay it down as when trailering, it lies on top of the rear seats.
On any boat, If the anchor light is to meet the requirement to be visible from any direction, all the time,
it will need to higher than the head of anyone standing in the boat.
I doubt the common 2 ft lights actually meet the standard on boats under 20 ft.