glue???? why would you want to glue it down?
heres how i usually do it..
like stated already leave it out in the sun for a while.
put some kind of insulation down on the floor. the stuff that comes on the new carpet just isn't enough in my opinion.
lay the carpet in and get it where you want it.
seat bolts i shove a screw driver up from the bottom of the car to poke the holes. then i slit a cross pattern in for the hole and thats it. i don't cut an circle out or anything. seat bolt holes are big enough to feel through the carpet and i'll so the same as with the seat bolts only from inside the car.
then when everything is in the int and sitting where it should be i trim the sides of the carper and install the sill plates and kick panels.
