I am the father, I have contact rights for 105 days per year, do have a chance? Should I try when I go back to court in November for our return hearing? Her mother lives ion a disgusting state, uses recreational drugs I know. Only last week her boyfriend punched the car window through whilst my daughter was sat inside. I'm frustrated, but do I have a chance of winning?

Get an attorney if you don't have one.
If you don't have an attorney , your chances are none or less.

Be prepared to lay out some money, good attorneys are not cheap.
It may not be just, but it is the way the system works.
I know from experience. I did win custody.
It took over a year and cost several thousand dollars.

I wish you well

So you want to get primary physical custody. If you can prove the mother is unfit, you have a chance. But that is difficult to prove. Have you called the local Family Services agency to check on conditions? Was the act of punching a car window reported?

You will need more than just your word in court. Having an attorney will greatly help as the attorney will know how to properly build a case.