I am contacting homeowners on the pre foreclosure list, getting contracts.

OOS BRRRs are the devil's juice on this forum, but if you set yourself up properly with contracts, etc., you will come out on top just take a bit longer so you need to underwrite that in mind.If the former, I would do a combination of fixed income, private lending, and note buying and trade the arb.

They will not cover you at all for anything, it'll be in the fine print of your contract that they don't cover rentals. 

This is a fairly basic question that any seller should be willing to answer even before you sign a sales contract.

If you're certain the type of renter you're going to get are traveling medical professionals, you know they're on short term contracts (typically 13 weeks).

Be sure to understand the financing options out there for mobile home buyers and if you opt to carry the contracts on the homes you sell you should do some research on Dodd-Frank regulations. 

They have to have an established contract with the bureaus in order to report.

Negotiate with her or end our contract.

I say it is the first deal because it was brought to me by the owner before placing any other deals under contract (which I have done in multiple states) legally, and ethically.

The detective is not an expert in contract law and doesn't know what he's talking about.