Maybe, and I do not really know the best way, but....
1. Have enough $$$ for a good EM deposit.
2. Get POF.
3. Find deal and lock it up before the investors do.
I am not certain what I would do as a wholesaler and it also depends on your market. But in my market there are a lot of homes that are deals that get taken on day 1. If you are the one that gets a deal locked up on day 1 - then you have something to sell.
It was mentioned that most wholesalers bring what all of us have already seen - this is true - but if a wholesalers has a true deal, already locked up, that may be something of value to offer.
1. Make certain you know a deal when you see one because you do not want to be blacklisted by the Realtor for not closing.
2. Make certain you have serious buyers at your fingertips and know their criteria for purchase.
3. Make certain your offer is made in such a way that you can transfer control.
In this scenario, it is not a matter of finding what others have seen and rejected, it is a matter of getting to a deal first.
Or - you could lock up a single cash buyer, scout for deals, and when one comes up get them to make the offer immed. If you are credible in your research and they are truly and actively buying - this could be a win win relationship.