This is even in the southern part of the state, Eagle River AK. For 99 sat youve got to be over 300 feet back to clear a 50 foot object. Compared to 80' to clear 50' in Belingham, WA which looks to be about as far north in conus.
I wonder what the offset receiving angle on the AK-HI dish is? The standard ones for CONUS are an angle of +22.5 degrees to the dish face. But that can't be the same for the AL-HI dish.
Otherwise the dish face would actually have to point downward toward the ground, or have a negative depression angle in order to actually receive from an elevation of only around +10 degrees above the horizon.