I appreciate the thought, but I feel the jiggle physics and or the size of the hat makes it draw too much attention to the cosmetic. I'm not the best at putting all my thoughts into words, but something just isn't quite right here.

funny hat -the blue blur.

One day, you know that Stetson tried to leave him so he caged it up with cyclone fence.

Fits the character pretty well to be honest! Not something I'd wear personally but it's nice to have a goofy item actually make sense for the character.

Noice novelty size foam Cowboy Hat.

boorring

boring comment

boring concept

I am going to give the average sniper more credit then you are lad and assume that they all know that the head is located above the shoulders.

wide-brimmed bandito begs to differ

"I think you severely underestimate how big the hitboxes are."
For the headshot hitbox? I'm talking about the sniper seeing the engie's head. This hat covers the top part of his head, making that part impossible to see for snipers, and the hat being so big also confuses snipers because it blocks their vision if the engie's head is positioned right.
Even if this wasn't an issue, the hat is too big.

I want to go on something more thrilling than the Monster Basher

I think you severely underestimate how big the hitboxes are.

Eh. It's okay. Nothing bad, but not particularly interesting.
Definitely too big though, this is very unfair for snipers since it covers a lot of his head.

looks cool

What military advantage would Engineer have using a foam hat in the battlefield? Remove this or face my wrath.

For real though this is a fun hat.

Absolutely fantastic. I love how you took these “party foam hats” and made them into something that can be used outside of the joke

Too small. Scale it up and it'll be perfect

that would just defeat the idea of it being a novelty big foam cowboy hat?

Too big. Shrink it down and it'll look good.