Seems a bit strange, is this with like rocket mortgage?

At the end of the day this is not rocket science buy stuff knowing you can hold it for the long-run.  

We've lived here about nine years now and have seen values sky rocket.

Not rocket surgery 

Those who have rocketed to success since 2010 have had success with cheap, easy-to-get money, but I wonder if when the next down turn happens or inflation hits the fan....will they be able to hold on, or will they be providing me my next bountiful source of good deals? 

There's no rocket science to it.https://www.biggerpockets.com/member-blogs/12615/88171-due-diligence-is-the-key-what-can-you-doBest wishes! 

If your handy man can't figure out how to assemble them find someone else it's not rocket surgery!

Interesting article on Huntsville Alabama worth sharing - https://www.cnbc.com/2019/11/12/economic-case-study-huntsville-capitalizes-on-rocket-city-roots.htmlWow, first I've heard of this: "Huntsville International will be the first — and only — commercial airport licensed by the FAA for a space plane landing." 

The last refinance I did was with rocket mortgage. they have a wonderful dashboard that shows how much interest and principle have been paid.

Sure, you may need to file a few extra forms, but it's really not rocket science and any half decent CPA should be able to do it for you for no more than a few hundred bucks.I always account for the following when UW deals:- Property taxes- Property insurance (including an umbrella policy)- Property management monthly fee- Property management re-lease fee (I assume I have a new tenant move in each year)- Owner paid utilities (if any)- Maintenance and repairs (for a SFR, I assume between $75-100/mo)- Capex reserve (depending on the condition of the major things in the property, this will drive cap ex reserves)- Turn reserves (I like to have at least $750 in the bank for a turn)Other than that, depending on whether or not a property is held in an LLC or not, I may add an additional LLC fee of $800/yr (since I live in CA) and I will also usually throw in an additional $200 in accounting expenses.