Being untruthful doesn't just kill your chances with an airline, it defines you as a person. Are you that insecure with who you are as a person that you need to compensate? Three or four is still a lot when you are competing against people with clean records who are openly admitting their faults. A mistake that you own and grow from is easily forgiven but a mistake that you deny and lie to conceal is a blemish that can't be forgiven.