There are a few options(1)You can get connected with the larger wholesaler firms in the area (2) go through PCPAO site and skiptrace the buyers of similar properties as yours, (3) hunt down the agents involved in the sale of properties similar to yours or go to local REI meetings and pitch it to the investors there. 

I Am looking at getting involved in rental properties and debating on which option would be best.

Quote from @Scott Mac: Every investment anyone makes involves risk.

So back to the drawing board, but for myself the big takeaway is to continue on the course that I set out on and too continually learn and stay involved with goals that I set out on and to stay focused.

In addition, the book keeping and legal involved with a syndication process is greater than if partners are not involved.  

One thing I’ve always done is focus on the 75th percentile of the rent estimates, as my properties tend to fall into that range (very nice, but small with no amenities).While I think there will always be some manual research involved, the current platforms lack key functionality that could be easily implemented with the available market data and technology.1.Quality Metrics:•Filter comps to match the quality of your rentals.

My involvement would go down drastically to where the only thing I'm doing would be funding the deals.  

Detroit would be a solid option if you're strategy involves a little more risk for potentially higher cash flow. 

Find an older one who'd rather sit back and get the interest than the higher return higher involvement of another flip.

I'm involved in too many things, but that's what happens when you have a family and kids to support.