im not sure about which setting for the heat gun i dont think it makes a difference much the important part is how far heat gun is away from covering. Without the nozzle quickly go bakc and forth across the wrinkles about5-8 inches from covering slow down movement or get closer until wrinkles start shrinking out, then attach nozzle get a little closer and start moving gun faster than before and keep getting closer and closer till the little wrinkles shrink out. Also remember too that when you apply the heat it makes the film looser so if a wrinkle isnt coming out take the heat of and as it cools it should shrink keep heating and taking off heat watch for it to shrink keep repeating till its gone. The most important part of using a heat gun is to always keep the gun moving. With the more expensive films liek ultra and monokote you dont have to worry about burning a hole through it liek you do with cheaper covering like towerkote.

Oh yeah about denting the wood the heat should tack the film down if its not then your irons not hot enough you should not have to press down hard let the weight of the iron do the work. The only time you should press down is when youre getting into corners

it also helps to have a hot glove or cool hand when using a heat gun, i find i like the cool hand better.

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