Partners are happy because I don't charge an exorbitant fee and do a much better job.

Of course they are going to have bad credit or they would be looking in a better area.Another thing you may want to consider to drive more applications is to not charge the application fee.

I rented out the additional bedrooms to friends and family, charging them well below market, and sold when it was time for my wife and I to start our own adventures.

This is straight from the CFPB website: "Additionally, for 60 days from the date your loan servicing transfers, your new servicer cannot charge you a late fee or treat the payment as late if you sent it to your previous servicer on time or within the applicable grace period."

Maybe charges $100 or less. 

Most renters cannot (or will not) take proper care of a pool.So...if you decide to go for a pool property, make sure you have it maintained...and charge it to the tenant.

My take on this is to underwrite purchases based on expected LTR rents (I like rentometer and the BP's own rental estimator), but start charging 1.5x that rent for your MTR.

I rented out the additional bedrooms to friends and family, charging them well below market, and sold when it was time for my wife and I to start our own adventures.

Just remember that $70 is the gross number they charge , they have to buy supplies , insurance , tools , vehicle , gas , workmans comp etc . 

Also would charge points at origination and bump the rate up a point or twoReason being my guess is this borrower can it get conventional financing so they are a higher risk.