Waterproofing a Wildernest

#1
Hopefully someone can help me here. I recently bought
a well used, very good condition WilderNest camper. I would like
to spend the time and money to restore the waterproof coating to
exterior of the nylon tent. I have been advised to go with a product called PolySeal. It's a re-polyurethane treatment. Has anyone had any luck in this process or something similar? Thanks in advance.
 
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