How long do I have to let it season?

Hey @Dan Miles - Manage strictly to the terms of the lease.

It can be drained every use (as long as you have an area to drain it properly to so this would be the only hold back) so no chemicals needed or reliance on a Hot Tub maintenance person2.

Depending on the state the properties are located in, some lenders will let you pull 80% cash out during the refinance process as long as the property meets a 1x debt service.

So this is not something to do for a better loan term.  Lying

I’m interested in doing long term rentals using the BRRRR strategy, but curious to learn what others are doing.

More often than not, they are more accommodating to providing you with a more generous line of credit or terms. 

It worked for me in the past getting started 2016-2018 but I have not seen any deals (at least in FL) I would take the risk in terms of money and time.Best of luck!

Looking to buy and manage a short-term rental in East Boston or South Boston?

Then you need to materially participate in the activity, here are the tests to meet MP: https://www.investopedia.com/terms/m/material-participation-...I recommend tracking your hourly diligently in a material participation time log.