Is there a way he can supply me half the money for the down payment but not have his name on mortgage when I take the loan? 

Would you be willing to elaborate on your opinion about bottleneck in the supply of BRRRR? 

With regards to your comment on other investors - There are several reasons why you may be outbid, here are a few: 1) the other investor is a licensed contractor who saves on repairs by using his own laborers and getting his discount on materials/supplies. etc 2) they could be real estate agents who act as their own buyer/seller agent, paying the commission side of things to themselves 3) some of them may be true cash buyers with no high interest loans to pay back 4) The other investor may not have the same investment strategy as you to BRRRR - they may just want to flip it for a quick profit. 

I think you may have a stronger motivator than some younger people do.

@Eric Telese you should find a local supply house for windows and doors.

Hurricane Florence caused slight damage to my property and decimated the supply of homes in the area.

The one in our rental isn't used in the coldest weather, we've supplied a space heater for those coldest days.The one in our personal residence froze up last year, the rep said it was because the filter wasn't being cleaned often enough.

@Michael Tucker You may want to connect with some of the mobile home supply stores in the area.

And while I'm sure there's a point where there could be more supply than demand, those hotels about to be built are literally banking on there being enough to demand to supply their hundreds of rooms.  

That being said if you think that they’ll rack up more fines then they have in a SD then I would just continue to supply the bags and try to find new tenants.