My only concern is searching for the rent to value "1% rule". 

With this one I would a paragraph that states " in case of any unforeseen circumstances due to the plumbing, we ask that you not flush wipes or pour grease down the drains "  that way you have stated that in the rules part of the listing.  

Sending this person a PM saying that I can help them- BOTH of these actions ARE in violation of the rules?

Additionally, you can still find deals that will cash flow and hit the 1% rule and amazing appreciation potential. 

If you're the only one in your company, this may not be necessary since you set the rules.

@Joy Daniels I have one of my STRs in that market on Anna Maria and each “city” on that 7 mile island has different STR rules.

There are several basic rules for a 1031 for identifying properties, timelines, and uses. 

If that's not an option, I would recommend he look into his state and local municipalities' rules on how to handle abandoned vehicles.

I would not categorically rule out a triplex and/or quad plex though...

I think demand is decent.If you're looking in a flood zone you'll definitely want to understand the FEMA 50% rule.