Floyd Last: 10EEEUS Men's Brannock: 11E
I am a brannock 11E but with a tall instep and wide toe spread. While Grant Stone’s advice of a half size down yields a boot with a glove fit, I find I enjoy having the increased volume of a wider size and have begun taking my GS boots a full size down but at an increased width of 10EEE. This has lead to less fatigue and more options in sock thickness.