The next guests will almost certainly be upset that the hot tub is out of service for their stay and are likely to injure my near perfect streak of 5 star ratings which will injure search rankings and possible lose me bookings.

If this hypothetical person you desrcibe possesses the operational skills and the investment opportunity is good,  there are plenty of equity placement services out there who will find the needed equity check.

For instance, as an Owner/Builder, you must pull the permits, and this instantly makes YOU responsible for the satisfactory completion of said permit, and you also must know applicable codes.If one of your Subs has an employee that is not completely legit, then that falls on you as well, and you might not have even known about it.....!

I typically have a responsible executive of the company (President, CEO, CFO, etc.) fill out the application and get approved.

BP is setting up a service next month to connect members and advisors and that should be very beneficial to members looking for professional advice.  

You're saying that practical applicability only shows (has proven) that will only be profitable after a decade? 

You don't need a co-host, you just need a good cleaning service to handle turnovers. 

This is my first time as a landlord screening applicants.

This is most commonly done in multi families but applicable here also. 

I took a look at the Miami STR zoning map from the Airbnb website and saw that the property that I'm about to purchase is in a zone that as "Short Term Rentals Allowed in accordance with all applicable State, County, and Local regulations."