The hard money loans are every bit as legit as a loan from a bank. I work through a mortgage broker. He takes care of all the paperwork - deed of trust that shows me as the grantee, promisary note between me and the borrower, makes sure I'm named on the insurance, orders apprasial and gets everything through the title company.
The deed of trust gets recorded. So, the property is the collateral. I will only take first position. I get a title policy paid from the title company that ensures I'm really in first position.
Your credit and cash reserves do matter.
The deal itself matters a lot. The broker will get an apprasial. I'll look at that and the comps the appraiser selected. I'll also look at the title company records for other sales in the same area and make sure the comps are representative. The max LTV for the loan vs. the appraisal is 70%.
I'll inspect the property before closing, and consider your list of repairs. I hold back the money for the repairs and only release it as the repairs are completed. I'll want to see release of liens from any contractors you've had working on the place. And, I'll want to see receipts for the repairs.
The loans are only short term. Six months, typically, though they're typically paid off in three. If you don't pay, or don't pay off the house at the end of the loan term, I will foreclose. If I've done my homework correctly, I'll take possession of a house that still at a decent value.