I'm no expert on the area and the rent you could get but That 600/mo HOA with the risk of an increase and/or special assessment has to be a (female dog). 

They bought some right, some were okay, and some were dogs.

I never give it a thought besides i would like to see someone move in. she rented it for a few months , but kicked them out over a dog. been empty every since.

The problem is, when you encounter the typical, what I call the "Susan Rottencrotch" realtor, most of the time the sellers have no idea about the behavior of their listing agent until they are exposed.This why when I'm helping one of my borrowers, who I have referred to my realtor partners, I like to preemptive strike the listing agent with an:Attorney Escrow Letter Approval Letter  (when possible, a lot higher than the list price)  This accomplished a lot of things, but mostly lets the listing agent know my borrower means business and can easily purchase the property and also the listing agent is then in receipt of the letters.Then if I need the listing agent to open and show their own listing, its hard for them to say no.  

I will be attending unless my nonexistant dog dies.

You can bird dog, take pictures, get quotes from contractors as a local, etc. 

I suspect the brokerage community is going to start telling their agents to turn in violators.one of my Oregon bird dogs just put a sign in the yard neighbor got pissed off as they wanted the house turned him into the state .. its kind of like getting a DUI  cost you about 10 to 15k first offense and a cease and desist..So then I went on to ask her about transactional funding as I have been a party to that a bunch of times and wanted to make sure I was legal.. she said NO way.. they deem that as some sort of fraud.. idea is the lender and wholesaler are in cahoots and scheming and marketing a property they dont' own and its prima facia evidence when they see two deeds in one day and a middle man payout.so bottom line you need to get into title and stay there for a few weeks BEFORE you market the property.. but as the regulator said.. they only respond to complaints right now.. so don't piss off any sellers or agents  LOL. 

Are the bigger dogs not concerned with newbies and their “no money what to do posts”?

The wholesaler gets the property under a P&S contract, then sells that contract to the end buyer and is paid an assignment fee.A "bird dog" finds properties matching the buyer's criteria, similar to a wholesaler, but does NOT get the property under contract, similar to a buyer's agent / broker.

That probably won't work but it's worth a shot.If his tenants are scaring off your tenants, you could threaten to sue him for the loss of income due to his tenants' behavior.