I play bank all the time. I've sold 3 cars and a house where I provided owner financing, often to people that can't get a loan from the bank because they have bad credit
The "worst" example is this:
I sold a 1998 Nissan Maxima to a guy for $6700, with $1200 down. The best offer I got from anybody else was $6k cash.
I provided a loan for the delta at several percent above the standard bank rate. I received payments for 9 months before the guy stopped paying. I showed up at his house 2 months later with the spare keys and took it back, drove it for 3 months, and then sold it again after doing a few hundred dollars of work on it. (Based on the total ROI, this is actually the best example in my mind)
Talk to an escrow company and tell them you want to provide owner financing on a property you are selling, so you will need them to create a promissary note and a deed of trust. Generally there are standard forms or they can create them for minimal fees (I paid $80 on a house sale for this.) Make sure you get cash in hand up front, and that monthly payments are made to an escrow account that pays the taxes and insurance.
Having a fix-it guy in a property you have a note on is a good thing, especially if you have personal experience of receiving on-time payments from him