She tried to pay but they didn't accept it because they said she owes penalties and interest.

You are basically accepting a lower ROI in exchange for the peace of mind of having good tenants with good neighbors.The thing you might be missing is this: Can you actually rent a $375,000 single family home for $3750 in your market? 

Here are some specific areas that we would love your perspective on:-What is the best way to accept money (application fee, deposit to hold, security deposit, etc.) from applicants if our business accounts are not set up yet?

@Ben HooperThe challenge in WA is finding an area that has the draw for travelers and acceptance by local jurisdictions. 

The way this is such a great sellers market I no longer accept any FHA offers They are too much of a pain to me and the houses sell without them 

thank you @Matthew Crivelli I know most lenders won't accept a second position, but just wondered if a seller or other private lender was allowed as a second position holder on the dp. 

On what planet would any self respecting REI ever accept that as an annual return? 

I am accepting to pay for minor damages (blinds, wall paint)

If there is a property you like and the listing broker is paying less than your agent will accept, tell them you'll have another agent show you the house that won't require you to pay more than what the listing agent will pay.

My issue has not been finding 3-4 family deals, it has been getting my offer accepted, even when it was a competitive offer, because its hard to compete with a cash buyer.