Hot melt taping a carpet together is not a job for an amateur. I used to do that, but now when I have to install carpet in a 14 foot by 14 foot room, I buy a 15 foot long, 15 foot wide Berber instead so that I don't have to do any taping.

I'd tell anyone in this forum that they can restretch their own carpet, but I'd tell them to hire a pro to hot melt seams back together if the tape lets go.