I'm from West Bloomfield/Waterford and have lived in the Detroit-Metro area all my life. 

Trailers old and in decline, yet still rented for the most part....Price is decent or probably be negotiated to such.My question is can a MHP come back to life with an infusion of newer but used trailer replacements and some investment in infrastructure or has the long years of decline permanently turned away future potential?

Talk to your financial advisor about Exchange Traded Funds and also about Indexed Universal Life Insurance products.  

So, making money now would be nice, but helping this family and gaining some real life knowledge is equally valuable right now.Thanks for reading!

growing up and living on the San Andreas fault most of my life..

Establish a criteria that you feel works for what you wish to accomplish and hold on to it for dear life.

If you want to make their life easier, offer to replace the toilet with one that is chair height (also known as high boy or ADA compliant).

Justin Pergo has a new laminate called outlast at Home depot it water , dog, kid resistance and you have 24 hours to remove spill and a limited life time warranty

Some cash-flowing rentals will change your life.  

I have lived in Rockford all my life and@Craig Wilcox is correct, they could never manage a budget.