I was fishing a tournament last weekend and while towing noticed I had a flat tire. I changed the tire out and made it home safely. Once home I inspected the tire and noticed that I had picked up a nail but not sure if it was the cause. Can you plug trailer tires and be safe doing that with no further issues? I probably drove on the tire a few miles until I noticed it was flat, can this tire be used again or should I just buy a new one (Goodyear Marathon)? Thank you.