So for context my service delivery is mostly inbound + youtube ads, both of those things take quite some time to start getting results. Thats why ive decided on a refundable upfront fee of 500-1000$, its refundable if they stay the full amount of 6-9 months. But in order to get results they have to put in effort on their side aswell... Is there a way i can structure the contract so that they are incentivized to do the work? Any advice would help thanks.