He has ALS that sadly is advancing quickly & we continue to work with him.

I learned that I must finish projects more quickly by outsourcing more of the work and utilizing larger crews.

RCW59.18.260 ...No deposit may be collected by a landlord unless the rental agreement is in writing and a written checklist or statement specifically describing the condition and cleanliness of or existing damages to the premises...Return it quickly to avoid any further action from them that could cause you more grief. 

I learned that I must finish projects more quickly by outsourcing more of the work and utilizing larger crews.

November is sneaking up rather quickly.

It sounds to me that Kevin came into a lot of money very quick and was not prepared to handle it properly.

You don't need an attorney to go to small claims court, although it might be worth a quick talk with one to figure out the legalities of the situation where you live. 

and promote local attractions (pubs, tour guides, yacht rental, etc...) while having them do the same for your rental. 

And then when a new deal comes to me, it's very quick to weed out what will probably many offerings that don't fit.But I already have an opinion at that point (and am not coming up with it from scratch and on every new deal).

Quote from @Kevin Reinhardt: Best practice: screen and approve every adult, whether they work or not, and have them all sign the lease.I highly recommend you purchase "Every Landlord's Legal Guide" by NOLO or "Managing Rental Properties" by Brandon Turner.