Get in to strict commission sales and start manipulating! You can usually just straight up lie to people, as long as they sign something in writing while you're chatting them up, they won't actually know what they're agreeing to. You have written proof and get paid, they can't prove you lied.

Taking strict commission usually earns you way more per sale than a salary/commission. When you're at the top of sales for a while you can even negotiate a higher percent of the cut.