I'm aware of liquidated damages clause or on-time bonuses but wondering if you any of you had success putting these clauses to good use in your contracts?  

The bonus is that I typically close at least one transaction a year, in which case the costs for the license are covered (or nearly covered).I agree with @James Woodrich that everyone knows an agent.

Some people add bonuses and penalties for time constraints if those are of the highest priority.

One who is familiar with foreclosures, short sales, REO etc a bonus.

My wife and I were making HH income of $160-190k in an average COL market (variable based on my bonus and her self-employment income which has increased from 45k to 60k over her first two years and is on track for at least 60k again in 2018. 

I'm also looking to go out of state, so a book that touches on that would be a major bonus. 

You might even want to structure in a bonus/penalty situation.

I've heard of landlords giving tenants a bonus if they have the place show ready and move out with enough time to move in a new tenant with no lag. 

Etsy and Artfire selling hand made or custom itemsEbay stores selling items you find in your area that others can't find or get easilyCreate a blog discussing something you are good or passionate about for advertising incomeStart a youtube channel for advertising incomeStart a services based business doing something you are good at and advertise on CraigslistCheck the Craigslist gigs area for one time quick gigs you can get that work around your scheduleUber or lyft as a driverHouse hack, or buy a house and rent out all but your roomWhile saving move your money from bank to bank to gain their 3 or 6 month bonuses like $300 bonus for holding your money in their savings for 90 days, then move it to the next bank offering that.Sell everything you are no longer usingSell photographs to stock photo websites like istock, depositphotos, etcBuy pallets of overstock/returns to ship and have Amazon sellBuild websites for companies using wordpressOffer to maintain the social media for all business owners you know, and take a monthly fee for some extra facebook and twitter time.Become a long distance digital assistant for some REI investors that need you to analyze deals, juggle calls, etc allowing you to learn along the wayOf course any job working in the industry you are looking to get into like an working with a realtor, investor, broker, mortgage agent, etc would be preferred since it gives you further advantages in future investments.Let us know what you decide to do!

While I know you mentioned commission based salary, I would make sure you create specific goals which if met gives them an added bonus.