Okay first things first.
You are suppose to DISCLOSE it.
While your LO has been in the business x amount of years his advice is illegal. I will say if it is found you have a great chance of automatic denial. You also have a chance of it being considered mortgage fraud.
While his unethical tactics are his choice for a paycheck, I personally strongly disagree with his tactics.
Good Luck
May all your dreams and wishes become a reality!