Sorry, I'm 17 days late, I didn't think there was so much fun going on up 'ere in I+A.

I pronounce hock and hawk differently. I can't say I recall ever hearing them blur together, 'cept maybe in Boston... which would explain why the 'stereotypical' south side Chicago accent may also blur thier distinction.

Hock - Exchange goods for money at a "pawn shop".
Hocker - Is organic and it comes from your throat after you say the word "hocker" a few times...
Hawk - Is the guy who does the White 'Sox' (pronounced like 'hocks') color commentary.