I even try to unsell them on the business by sharing my financial losses, litigation,  market shifts, permit purgatory, shady contractors,  clouded title issues,  paranormal activity, squatters, mold, etc.

Are you still active? 

There are likely active real estate investing groups for Tacoma and the surrounding area.

For bookkeeping purposes, I recommend designating a separate bank account exclusive to the house hack activities to keep some sanity.

The Tenant agrees to maintain an active renters insurance policy for the duration of the lease term and any renewal periods.

Income from leveraged real estate or active business income.

My biggest advice when designing a vacation rental is to truly know the daily activities, habits, and needs of your target guests.

If you have a ton of activity, then host an open house, get people through and then let them apply.

Of course there is nothing magical about a "syndication", it can be as good or bad as an investment in any other real estate activity.

12 or 24 Month Bank Statement is probably the best bet.