Best way to pay your contractor

[Anwar Shabazz]

When you hire a gc and the bid is 50k, how do you pay him so you make sure he doesnt screw you over?

10k  per week? 50 percent down? 50% when he completes the job?  I have always been burnt by these so called pros and I want to make sure I do it the right way this time.

Any advice would help guys.