However, their 38 page Prop Mgmt Agreement for OneRate is daunting--it lists many exclusions to their obligations such as any damage caused by force to a surface (whether from tenants, animals, roots, wind or other force of nature, etc).

You listed two but in broader terms financing (assumable, owner financed, sub to, fha, new 95% OO LTV that in most ways is superior to FHA, dscr, F/f conventional, NACA, VA, etc), value adds (development including ADU, upzoning, traditional rehab, sophisticated value adds that leverage localized rules, coop/tic, etc),  property types (residential, commercial residential, land, storage, MHP, industrial, office, camping, hotel/motel, etc), passive/active investment methods (GP, LP, REIT, nnn, self managed, pm, flipping, mineral right, lumber rights, etc), residential rent models (LTR, STR, MTR, rent by room, student housing, arbitrage, etc).  

There are companies that are vertically integrated that can walk you from start to finish with the investment so naturally the interests will be mutually aligned.

The forum you posted in is about the BRRRR method. 

Are there any practical methods for implementing usage-based billing without submetering?

A lot of this is based on human nature.  

Hey Chad, there are different methods of appraisal.

Enemy method. 

Naturally they are talking with tax professionals, however most of them are not very knowledgeable about SDIRA's- hence this post to you all!

I run a small nature hotel (luxury glamping) that offers similar services to bed and breakfasts.