We are preparing to travel to Alaska this summer. We are looking into having the 3M film installed on the front of our MH. Is this a wise move? Is it worth the effort and cost? How much of the RV do you usually try to cover? Just the front end or also part of the sides? Is it advisable to cover the area above the windshield? Lastly, how much could I expect to pay for this? Thanks for any advise you can give me.