When combined with asset isolation your exposure is generally limited to your equity in the property under attack.

Is the area isolated or widespread?  

So attempting to isolate those 'strategies' really doesn't even make sense since by isolation the strategy you limit you capability of recovery.So if we change the person/entity to which we asked the question "what strategy did you use" to say a bank the question becomes a bit absurd.

I'm in Ca and < 1 month from moving to Nevada or Arizona to do a live in flip which I plan on as a separate and isolated transaction from a 4-8 unit multifam in either state.  

This just creates better isolation and flexibility for your IRA.  5-10 years down the road, your IRA may not be exclusively partnering with this one individual.

The "rougher" areas aren't isolated to a single part of town or zip code.  

I solely invest in such properties in Baltimore city. requires experience on the ground to manage them. key to victory.

The Trust isolates the parties from liability.

Still, I think one of the biggest problems a lot of elderly people face is feeling isolated and lonely and the best business opportunities are offering solutions to other people's problems.

I've worked in network for decades and there's lots of issues here.For the owner, you could provide a subscription service for each tenant & deny all other access, BUTif all tenants connect to your modem or router, you create a security risk for everyone.Pre-wiring would require a setup like:ISP==modem--router--- to units and this generates access from one unit to the other.for a more secure layout you need an extra router for each unit and someone to set a unique address for each router - - and this isolates each unit from the others.In either case, notice there's only one ISP so everyone has the same level of service and you'll need a big bandwidth to support multiple units.