My plan is to collect one month's rent as a damage deposit.

If you collect an additional month rent, that can only be used for rent. 

I am curious to see what folks are doing to collect rent during this pandemic. 

The less showings you get for your property, the less rental applications you'll collect and the longer the property will sit. 

I won a judgement against the first set of contractors but that’s only the first battle, the second battle is collecting on that judgement.

After you get a judgement, then you can send them to collections.  

Note buyer's step into the role of the bank and collect the borrower’s principal and interest rate payment.

Also, I would recommend looking closely at the credit reports for prospective tenants and seeing what they have in terms of debt, collections, etc.

With my previous Broker, they weren't as generous with this and collected whatever my previously agreed-to split was on a standard transaction i.e., if my split was 70/30, the Brokerage would take 30% of the 3% on my personal transactions just as they would on a non-personal sale. 

Right now there is a lot of uncertainty and expectation that real estate will lose value, rents will go down, vacancy will go up and collections will be poor.