Amos, While I am apparently not the ACK to whom you refer I am indeed the Hak.
The ancedote as to how my step grandfather got the name Hakman at Ellis Island in the 1920's goes something like this.

After the long sickening and crowded voyage in steerage my grandmother and grandfather finally made it up to the processing line at Ellis Island which would eventually lead to the health check or quarantine and finally to enter the United States as legal immigrants. As they stood before a beaurocrat behind wooden bars who was nearly as exhausted as they;
The man made some crude cultural slurs in their direction such as "These dirty Hebs give me the Hebe Jeebies. Grandfather caught the jist of his remarks and replied in Yiddish "Hak mir nicht!" which means "Don't knock me". The clerk said Hakmir? OK now your name is Hakman.
Thats how the family name of Tostoyovich became Hakman with the stroke of a pen.