My two new Old man winter tarps from Wilderness Logic arrived today!! I must say, these things are SWEET!! I can't wait to get the whole family out for a hang in the near future... The seams on these tarps don't appear to have any seam seal on them. The last time I did this was many years ago when I was a ground dweller. Can someone explain the best approach to take to complete the task of seam sealing my new tarps?