It states the company can apply, accept and process any loans, LOCs or credit cards (and any other credit instruments) on behalf of me with my information.

Just like learning a language or an instrument. 

What instrument would be used to protect everyone on the deed?

You wouldn't have to worry about the due on sale clause per Fannie Mae's guidelines:*The mortgage loan was purchased or securitized by Fannie Mae on or after June 1, 2016, and*The LLC is controlled by the original borrower or the original borrower owns a majority interest in the LLC, and if the transfer results in a permitted change of occupancy type to an investment property, such change does not violate the security instrument (for example, the 12 month occupancy requirement for a principal residence).

If the deal results in a loss, you'll have a loss.If the instrument paying compound interest is well secured, such as a deed of trust or mortgage secured by real estate at a low loan-to-value ratio, even in the event of a default you could likely recover your principal and all of the accrued interest. 

@Reggie Dumont Clever, but sounds risky with bad debt instrument.

What I was actually referencing is the trend on interest rates of the US Treasury 10-year bond.Below is a chart of that instrument going back to 1980.

Coal and coal bed methane gas and mining rights and all rights incident to the extraction or development of coal or coal bedmethane gas heretofore conveyed, excepted and reserved by instruments of record; the right of surface, lateral or subjacent support;or any surface subsidence.12.

However, I have seen others mention instruments such as a Memorandum of Contract and/or an Affidavit of Interest.

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