Yearly ROI on flipping?

[Hunter Purnell]

I'm curious as to what others are seeing on their flip returns? When converted to a yearly IRR I'm assuming this as my low end and high end. These are assuming I have money working all the time. I plan on doing 1-3 at a time.

Low end
10% return every 4 months = 33.1%

High end
20% return every 4 months = 72.8%

I have experience flipping but they have all been long term. And mostly land. 1 year to 7 years. Want to hear what the experienced short term investors are actually seeing.