You would be shocked how many times tenants will say "oh, well, ok, we don't want to stay here then if you don't want to continue lease with us so ok, we will move out" which is 100% legal, it's called voluntary. 

There is a shocking amount of tourism there and young adults travel from around the county and the world to work at amusement parks and water parks in the area because the companies provide internships and work visas.

You might be held liable for any injuries to someone who gets shocked - even if they're trespassing and even if there are prominent signs. 

We spent close to $150K buying and flipping these rentals and I was shocked to see that our taxes INCREASED by several thousands of dollars even though we made such a major investment and took on substantial debt to buy these houses (in the form of a HELOC and an additional mortgage).Is this typical?

I'd be shocked if you couldn't find 5 year fixed rate loans with balloons through this avenue. 

He then went onto their website online and researched their property management online and was shocked.

Just waiting for someone to touch it and get shocked.

The coliform is the biggest issue, but a shock treatment with chlorine bleach is generally all you need to take care of that.

Starting back up in 12 months will be a bit of a shock to the system and might cause them to move. 

Shockingly, the owners that respond to postcards want to sell for prices that simply don't crunch as rentals.I can tell you that from the other side of those brightly-colored post cards (the one the I tossed out today was bright green), that property owners are being flooded with postcards from all over the country (green was an outfit in FLA).