So I applied mine today since I wasn't sure how long it would take. Did hood, roof just above windshield, behind all 4 wheel wells, and gill area.
It did take some time, but was pretty easy to apply. Are there wrinkles? Yes. Contour of body makes it tough for there not to be when installed by a novice. But frankly, I'm not in it as a beauty contest for the trip down. Point is to save the paint from the worst of any rock chips.
Did it by myself as well. Here are some pix: