My understanding is that after a year you can move into another house hack and get another FHA loan.

That approach might not serve the seller well, especially since the goal is to genuinely help them by offering a reliable quick solution.My current thought is to focus on networking and building a solid and extensive buyers list and understanding their ideal investment criteria upfront.

Fully understand what they can do to you and what is required.

They know the market, understand contracts and law, are experts at negotiation, provide a second (objective) set of eyes, and more.

Again these numbers are just examples to help understand what cash on cash ROI is. - Aggressive strategy will buy a cheaper house, which is why it results in bigger cash on cash ROI.

The BRRRR calculator may help you understand this better as the results are shown in three different phases - rehab, post rehab and then post refinance.

Just trying to understand what you're looking for. 

The key is to understand the capital stack, who is in line in front of you and what are their terms.The people who are getting burned may have known there was debt in front of them, but did they know it was short term or variable - did they know all the details to make a good judgment on the investment.If a property had 20 year fixed debt at 70% would you take that over 3 year debt on a variable rate at 50%? 

I wish I hadn’t because I didn’t understand the necessary “accumulation phase” of REI and wealth building.

Its my understanding that the individuals are responsible for all the legalities, contracts ect to make it safe not to get ripped off.