I think I have a solution to the problem. As I understand it, you have a lot of deer that are looking to commit suicide on the front of your (or your neighbors) vehicle. You drive the largest vehicle you can afford to operate so that you will win if it comes to a contest. (Kind of like a Ford Excursion vs a Smart car) You want to get better fuel economy and still be able to tow your 5000 pound laden trailer everywhere you go. Well, it's your lucky day!
I found a couple of offers on the internet that are right up your alley.
I copied and pasted this info so you could start your saving with a :
Fuel Saver Nitro (50%-110% Gain In Fuel Mileage) Normally $1,174.95, now only $689.95
"We are one of the largest sellers of HHO systems on the internet. With well over 2000 systems sold. Get From 30%-90% increase in gas mileage with this unit!"
Money Saving Device
Then, add : VortecCycloneFuelSaver.com Instant Mileage Gains up to 35% Guaranteed to save money on gas. $69.95
Please record your mileage before and after trying these mods and let us know how it works out for you. According to their claims, you can come close to doubling your fuel economy without having to change any of your habits.