To get a really good discount on a property, what are some of the tactics you guys use to shave 5, 10, 20k off of the asking price?

As to the BRRR thing, that's an old tactic, buy n hold, you're a victim to financial changes along the way, it is not infinite as the gurus claim, you have loan concentrations as you acquire more financing, your available LTVs will drop as inventory increases and hard money doesn't last for the long term.  

As a fellow PM, we know there is never a perfect way to run a project, different tactics, tools, and methodology are required every time.

Many tactics.  

Any networking with any person who touches investors (lawyers, bankers, contractors, etc) is a good long-term tactic for meeting them.

A good broker will train you for different types of presentations, don't worry about that end of it now, just start learning real estate, not tactics so much.

I'm pretty sure those very tactics and mindset are the reason why people like Charlie, John, and others have a bad taste in their mouth when it comes to wholesalers.Your seller has no way of knowing what you made off the deal unless you or your buyer tells them. 

I just recently got on this site and have been overwhelmed with all of the new information and investment tactics.

So, don't sweat the name of your niche tactic, it's just a house for rent.

I will add that tactic.