Does anyone have any advice on a better strategy to earn interest with the cash flow being produced?

You could charge them market rent, but it may not match your Airbnb earnings.

During the peak season you have to make your money when the slow season is so much less.I do have events where the prices are expected to be high due to supply and demand.I do see some of the dynamic pricing days as being rediculous and your going to miss out on the early bookers looking for a fair price.

. $55k tax free is like $75k pre-tax W2 earnings...we essentially doubled my income that year.

I say this because every investment is an opportunity cost, and if you're going to take money out of stocks (whether in a brokerage account or 401k) that could be earning 8-10%, you should have confidence that your acquisitions are going to perform better to account for the additional risk. 

Sometimes we structure a”kicker” where if the property sells for over a certain amount we earn part of that.  

I want to earn my clients business and if for some reason they decide the relationship isn't working then they should walk away (but don't leave your agent high and dry haha).Commission is completely negotiable.

.✅ Equity Earn-In: Offer the seller a minority stake (e.g., 10-20% ownership) instead of cash up front.2.

This is how we've earned our reputation over the past two decades.  

Net earnings were about $400,000/year, so the business component of the sale was valued at about 3X, or $1.2M.