First, welcome to the forum. Yes, you will end up with a very large, awkward and Heavy block of ice in your bed. $120.00, Christ! 70lbs sandbags at Home Depot are $4.00 each, and they're easier to move in and out of the bed. With respect, I strongly disagree with putting the weight towards the back of your of bed. Once you slide, you have an (X)00 pound pendulum working against you. It is common practice to place as much of your extra weight either directly over the axle or in front of it near the cab. If you are serious about frequently driving your truck in the snow, then you should also consider replacing the stock tires. Anyway, good luck, and check the forum often for helpful tips.