what ever you use, seems the spray adhesives works well, time the tackiness before getting started, spray something outside the car, this will also alot you a check of the spray pattern, also spray one section at a time, and each time you go to start spraying a new section clear the nozzle outside the car with a brush (or your fingers) and do a test/check spray, the spray adhesives tend to dry up fast on the tio and then when you go to use it again it comnes out sideways and gets in your eye and all over your window and dash
. what you do not want is going to fast with the carpet onto the glue, let the adhesive start to get tacky. if you try to mate the surfaces to fast then hold and wait for it to stick you may find part of the carpet stuck and other parts needing more adhesive.. which is now difficult to spray under the semi stuck carpet..
have a soapy rag or some goo remover on hand for overspray, and mask off anything close to your floor work area that can't take adhesive oversprsy..
take your time,