crlavoie
Contributor
*Floater*:My size 11 chuck taylor hi-tops measure 4" at the widest point and they were a snug fit with the XL jets, tighter than my wet boots. It's hard for me to imagine how someone could stuff a shoe that 5" wide into an XL jet, but apparently the friend of the poster above me does it on a regular basis - I doubt he can get them all the way in though. Anyway, I'm guessing the turtles would be best for you.
By the way, then length of the boots doesn't matter much, it's mostly about width and height.
There is an important difference here. The vulcanized boots are very soft and compress easily compared to the relatively rigid last of the chucks. My Treks have the same dimensions but being a rigid last, I can't even think of squeezing them into an XL.
Regardless, Turtles are the way to go.