I use it like a sweep account and pair it up with credit cards with promotion balance transfers.Here is what i did: I needed 50K down on a property i used 25K cash and 25K in the HELOC.

Shoot if your money is burning a hole in your pocket, became a private money lender to people on here. 

Since you already discussed it with him, I would say you could list it online/MLS FSBO with 3% buyers commission (in a hot market that is probably enough for a sale) but would probably stop short of actually calling other agents to promote it that way.

Wasting time will lead you to getting burned out. 

If many have been burned on them, how do you avoid it? 

- it was one of the promotional offers where you pay a minimum/possibly a small % a "points" - and then minimum monthly payment but the APR was 0% for over a year.   

He has managed to burn up the past 4 months making changes, blaming the city, and filing items incorrectly.

I got burned the hard way on one of my properties that had been vacant and when the tenants moved in I learned that the shower didn't work properly, the shower drain was clogged and a toilet leaked.

Those were tough deals and sometimes impossible circumstances and some agents got burned and it impacted their careers.  

We learned a lot during the first year and learned how to get burned and with that taste in our mouth we knew we had to do things differently.