Possible Clues:

• Is the profit from commercial fishing only ten?
• What 12 across might get out of it without the sound of 11 down
• Does your profit from fishing amount only to ten?
• The profit from commercial fishing?
• Profit from commercial fishing seems to be only ten
• The profit you get from a 12 across activity
• Perhaps the income you'd get from commercial fishing
• What the commercial fisherman gets to put in the bank
• The profits from fishing?
• Is that all the income you get from commercial fishing? Only ten?