Well I tried it.
Drove to Autoquest and picked up the 3M Paint Defender Kit. Read the directions and had to wait about 8 hours for the hood to cool off.
Point one: buy the product a day before
Read the directions a couple of times, watched the video and a couple of You tube pieces also...
I am not an expert nor am I a klutz but the result is not what I hoped.
I do not have a smooth nor a uniform finish. I applied the product inside with my garage door opened as I had to have the car half in and half out of the garage as it is a real tight space. I recommend a totally enclosed space. There is no way this can be accomplished outside. I read and re-read the directions and although there are sections that are smooth there are other sections of the hood that are dimpled (like the skin of an orange). The directions stated you have 10 minutes to re-do spots you missed.
Clogging: I tried not to keep having the spray on and off often as the directions say that is a way to avoid the spray getting clogged. However, a blob about the size of an eraser ended up in two different places and I had to clear the spray by blowing on it to avoid any build up.
Too bad you cannot apply a second coat like when you paint a wall to correct sections and shape it up. I think a second coat would have fit the bill with this product but you cannot do that as you have 10 minutes to respray and if you are doing this for the first time there is no way to "get it right" at least for me. Maybe after curing the appearance may improve. I will not be driving the car for a couple of days. If need be I'll update. Bottom line is I cannot recommend this for the average DIY'selfer.
I wanted extra protection for an upcoming one week business trip around the state and I hope I still get some protection. Right after the trip I am going to remove it as it doesn't look good.
The concept is a good one but there is no way for an average do it yourselfer to get the finish our cars deserve IMO.