I worry about any "soft material" used in residential flooring such as rubber and cork.

Lessons learned, Maybe but he may be too soft for this business.He will be screening his own tenant, he knows better than to ever rent to any one on any form of government assistance in the future, he will now have experienced with his first LTB hearing and learn how much of a joke the system is. 

Along with the math, there are the soft benefits to think about.  

We waited for the rainy season when the ground got soft again.

He needs to pay what he owes in full today or sooner and make it very clear that even if he has to go with out food rent is due in full on the first every month or you evict.Tenants in difficult situations take advantage of soft landlords.

I've been using Navajo White from Home Depot which is a soft tan color.

Maybe I'm too soft to make it as a landlord.  

He didn't need the money and had a soft heart, and had this really weird fear of vacancies, even though vacancies gave me the opportunity to raise rents exponentially with new tenants.I'd give an option B, if you can afford it. 

I first would start soft, with having a conversation with him.  50% chance he will allow for a resolution. 

Depending on the state, using the seller's agent might be your soft spot.