As far as renting to military, I think they make good tenants but there is no guarantee that you will have them as tenants.  

Would I call it a rock-solid way of guaranteeing everyone's claim on their investment??

First I would be wary of buying into a franchise for residential RE photography unless they have a guarantee and they can show you examples of them being able to feed you enough business to make a living.

He understands he's in a seller's market with lots of investors flocking here with all cash offers, and I'm worried that if I don't figure out a creative way to get it fixed I'll be out lots of cash I need to use to increase the value of the property.My plan right now is to understand what kind of warranty/guarantee came with the roofing job and hopefully have the company who did the work make it right if they really did replace it recently.

You can't guarantee the payments will be made?

As I dug further I saw that this was not the case, leading me to conclude that ultimately:My loan options are going to be limited to condo-friendly loans (probably a commercial loan on a package of properties).My ability to guarantee ongoing operations is limited (this is true in most places, but here in OKC we've seen recent examples of Owner Associations deciding that rentals are no longer permitted . . . woof!)

I would also be careful because the $600 weekly bonus has ended and there is no guarantee it is coming back.

You’ll still be a limited partner in the deal, but by assuming additional risk by signing on along with the GP, your returns will be higher, faster.There is a risk that you’re taking here because you are guaranteeing the loan, so make sure you know and trust the syndicator you sign the loan with and that you consult a lawyer.

When given a single family to analyze with BRRRR strategy, how would you guarantee positive cashflow after re-fi?

Ask if possible to do personal guarantee on mobile home purchases subject to contractual ties to them using the park.