I'm a buy-and-hold investor so I'm not combing through the MLS (or other areas) looking for rapid flips.  

Find an accountant who has clients in that industry and have them go through the disclosed financials with a fine toothed comb.

If you're in a niche market out there and you're one of the few people combing over legal notices then I guess maybe you win?  

Looking to start investing with close friends and need a way for all of us to start combing our money together to start investing on rental properties

So that's pretty great.Lessons learned:Just because your cleaners do very well and make everything spotless in the beginning doesn't mean they will in the future (found some trash left behind a cleaning in a post mortem checkup)Comb your place for hidden cameras and other things your guests can leave behind.

Go over the place with a fine-tooth comb.

Scour those contracts with a fine-tooth comb. 

I'm combing through ADU regs right now and seeing what is/isn't allowed, still interested at this price if I can't AirBNB it, as even allowing $500/sq' build cost, my total cost is about $250K. 

The mid-century modern look caught my eye while combing through properties on the MLS.

You could just as easy find an investor friendly agent with experience that can comb through new MLS listings for you.