I also require a picture ID of all adults prior to check in information being sent…..the combination of the above with no same-day bookings has pretty much eliminated guests that may have been up to something.

I'm thinking that one way to eliminate the problem is to eliminate the original mortgage with a refinance. 

However, the Mobile would have to have it's own parcel, have the wheels removed, be skirted, have elimination of title and be newer than 1976 to even be considered for the same type of loan, otherwise it's considered to be a vehicle and would be like a car loan.

Many are under strict HOA bylaws that may limit the number of rentals or eliminate the type of rentals (STR/MTR) which can crush your business plan. 

The more than anyone else requirement will eliminate one of you from being able to offset their W-2. 

Quote from @Roger Paschal: Quote from @Stacie Smith Equity Assurance, LLC, offers insurance for the due on sale clause.Thank you Stacie for the plug for Equity Assurance, in over 4 years of offering our services we have never had a foreclosure because of the Due on Sale Clause.Also with almost 20 years of doing Subject 2 deals myself never have I had a bank follow thru with a foreclosure threat, yes they have called and I am sure they will continue to call in the future, that is their job is to make sure all is correct and the investors job to make sure all their ducks are in a row.With Equity Assurance, our goal is to make sure the investor is educated and the seller has all the correct information and disclosure on how this process works.We are now offering some online courses and documents to make sure the Investor is doing this process correctly.We are also slowly changing our name from Equity Assurance to Subject2Institute.com to eliminate some of the confusion, we are not an official Insurance Policy we offer peace of mind for the seller if the investor needs this to make the sale. 

Don't worry – the smell will disappear (and it will actually absorb any other bad odors you're trying to eliminate).

If it is in a mobile home park and the lot doesn't come with the mobile home (the lot is rented), you sometimes have to get approval of the owner of the mobile home park.If it is a mobile home on land and has elimination of title you sell it like any other house.

Labor: Eliminate Federal Student Loan Financing for college degrees with no or low ROI.

If the LLC is not an option with the realtor business (eliminates S-Corp election option) then I don’t think it is worth setting something up for investment purposes assuming you don’t already have a large RE portfolio.As for your other question, for most of my business owner clients I recommend using Interactive Brokers because interest earned on just cash (not putting it in any financial instrument or security) earns a very competitive rate relative to the many alternatives.