Has anyone here ever seen a “pontoon” shaped UFO?

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Doesn’t look anything like any of these

No one?

I observed a black UFO "Boxcar" once over a house, as I was flying low toward an airport one cold winter morning. It was almost as long as the house.

Stan Gordon, UFO Investigator of PA.. said few ever report such.

Some 6 weeks later he called me back and said, "Near Harrisburg, PA they had received a report of 2 triangle shaped UFO and a Boxcar UFO. He thought I might like to know that others are reporting them in the area."

yep...the "light bridge" is actual several threads. When you view it from one angle (overhead) it looks like an H, when you view it from another (ascending) you can see it's more like a helix of fire with multiple strands linking the "pontoons."

Thanks, yeah like an H

Not me. Just these :

Giant cube

Perfect metal sphere

Flat Triangle, chevron shaped really.

Something like an upside down helicopter.
With Rotating blades underneath.

OP, here is a short recent report from Washington state where an object was described as a "ladder" in the sky. This might be close to what you saw:

[link to www.ufosnw.com (secure)]