Going to be working with deadener for the first time tonight

So working with gloves is a good idea. And cutting into more workable pieces makes sense. Luckily I'm in California, so it's HOT, which keeps it pretty soft. Though I'm waiting to apply till night fall, as I fear it is too soft during the day. As I said I do have a roller with it. What do you mean by "pre-cut holes for mounting clips"? Do you meant clips you stick on the door to hold wires? And you cut the hole in the deadener?

Ahhh, I only have door clips around the outer edge, so that's not a problem. And yes I heard 25-50% coverage for most notable effectiveness, does the same go for the trunk or should I try to cover as much as I can with that?

That's what I've been hearing. And while I'm sure full coverage can only improve results... is the gain really worth 2 or 3 times the cost as it is for 25-50% coverage? Cus as a college student on a tight budget, I'm betting it's not a huge difference. Though I'll never know till it's done. I used a little under half of my 25sq ft roll for my trunk lid, the rest is going to be used on the rear deck and the spare tire wheel well.

What about layers? Are there key spots that you should layer up if possible? Do most do layers everywhere, or does 1 layer usually make a big enough difference?