Bookings and all that is simple- AIR,VRBO, we do a direct site we built but you can get by without.

Personally I have not had the best experiences with these sites, I typically go via word of mouth referrals from other investors I know from in-person networking in my market, or from the BiggerPockets referral tools.

I bet realistically most people would stop there.

so after reading all the posts, it sounds like his best bet is just to move on and walk away finding another place maybe coming back in future to keep contact with that person if he really wants that location… Correct me if I’m wrong, but my analysis from all this is that hiring a squatter would only be applicable in situations where the person who is occupying the residence never had a lease or contract therefore it is a rare circumstance where it would be a viable option. 

I would like to be able to respond to messages, schedule tours, etc, within the source site to keep it contained, not via text/email.

However, in practice, lenders rarely enforce it as long as mortgage payments are current and there’s no added risk for them.If you want to avoid triggering the due on sale clause, the safest bet is to wait a few months after closing before transferring the deed to your LLC.

Check the state regulatory agency's web site.

The wholesale deals listed on his site are on the MLS some have been auctioned and in no way are they wholesale deals. 

Site cleaning is consistently understated in rehab construction budgets. 

As soon as you start discussing your business practice and strategies with your customers (tenants), then all bets are off and you run the risk of Fair Housing violations.