What gave me the idea was db’s tires but I did not have any tires that would work on hand. The first set of tape skid plates went on better with almost none of the wrinkles.  I don’t know what I did this time that made it wrinkle. This one may be further up the end of the canoe.  I have enough to make several more sets so I am set until the canoe gets enough scratches that I am not so paranoid. 
LOL Tires make it rain.