Explain the potential damage and costs involved with the water running continuously and put it in writing letting him know that he is not to touch the chain again, that if he needs service that he should notify you and you will take care of it.Additionally, there are devices you can get that will alert you if your toilet is running.

Once they move in, it becomes their damage deposit.

I like to think a jurisdiction would be hard pressed to revoke my rightfully obtained license without a healthy challenge for damages..anyhow MTR's are absolutely one of the most lucrative and necessary housing options on the Oregon Coast as very rarely can one find consecutive weeks or months of attractive furnished housing.

The growing list of issues include multiple poor quality tenants damaging properties and breaking leases with no recourse, and non-existent communication/accountability from property management to the point where I have zero faith in their personnel correcting the issues I'm experiencing. 

length of damage?

You definitely need insurance - one hurricane could wipe you out or cause enough damage to where it essentially (not literally) still wipes you out. 

Unless you can do some damage with about 30k which is how much you can potentially get based on your estimated value and remaining loan amount.

The sooner the better and hopefully with as little damage to the property as possible.

Expect to find less desirable properties, deferred maintenance, low curb appeal, maybe even damage that needs to be repaired.

"for $___/year, we provide "x" additional inspections")6) Liability policy that covers tenant intentional damage, criminal acts, and unpaid rent when skipped or evicted (through insurance provider that provides this kind of coverage)7) Financial reports per quarter (as whatever period makes sense to you) (this can allow you to advise the owner on the health of their portfolio)8) End-of-year review of the property to show conditions and suggested needed and preventative maintenance items 9) Preferred vendor discounts (requires a contract with a vendor to give better pricing)10) Eviction protection programs (this is usually done "in house" when you have sufficient number of units under your management to be able to offer this kind of program)11) Legal services (requires agreement with landlord attorney to provide those services at set fees)12) Professional photos option (for enhanced listing)13) Professional, licensed home inspection (this is more relevant for older homes to ensure safety and habitability are addressed) 14) HVAC filter replacement program (this can also be a program offered to tenants)15) Pet and ESA screening through pet screening vendor (helps to streamline and increase quality of screening)16) Client portal account for ease of communication, updates, reports, etc.