First, reread Chapter 25: How and Where To Find Buyers. Tom lists 5 or 6 different ways to find partners/buyers.
You said you already know how to skiptrace investors so the next thing is to go on zillow, realtor.com, redfin, etc. and look for newly flipped properties in the same neighborhood as your property (homes that arent new construction and that no one is living in; if the house is empty, no furniture, bath towels or clothes in closets, its likely a flip.)
Search that realtor and see what they’ve sold; if you find a few flips, they’re obviously investor-friendly and can help build your buyer’s list fast.
Also check out facebook fix and flip groups. There are tons of them and if you have an actual deal you’ll have to fight them off of you.