Granpooba, you are correct, sooner or later you will have to, all plastic coverings will require periodic maintenance to keep it looking like new. That's one of the reasons I dislike using plastic coverings. They do have their place however, no one can argue that they are light and easy to apply compared to other type of coverings. All I (we) are saying is why add heat and shrink now when there aren't any wrinkles to remove...

Vasek, you are correct that by using low heat as recommended by the covering, that you will activate the glue and not cause the covering to shrink. This may be a good idea to ensure that the covering has made a good bond with its substructure. I would recommend using a non-contact infra red thermometer to accurately measure the temp of your iron for this purpose.