Off grid sounds cool to some, but it really limits your potential guest pool.

Needs: accounting, tax filing, commission, payout feature to owners at the least.

If I create a debt fund that offers 9% interest on first lien notes with a 5-7 year payout, would that be attractive to high net worth investors?

Hosts can get involved by either donating a portion of rents from their payouts or they can offer housing at a discounted rate.

The reverse mortgage company wants buyout and I dont have over 200k to pay out.

Insurance would cover it, I would pay the deductible, and no assets would be lost.If you are in an area like San Diego where people are more likely to sue, a judge is more likely to find you guilty, and the payout is expected to be higher, you may consider an umbrella insurance policy.

Not much in terms of online reviews as far as I can tellI invested in a lot in Colombia a few years ago and have yet to see a payout as illustrated in their initial pro forma on my $30K investment.

Any advice on potential MTR markets near Houston and surrounding areas?

(We are working on a generalized survey to collect info on our buyers/potential buyers so we can make sure we understand who our customers are while trying to dial in their preferences and patterns.)You are doing great things. 

Also 4th quarter of last year Packwood and county officially did discuss potentially regulating STR's by either limiting numbers or adding a tax to cover increases in local services that are needed.