With the danger involved aside. I'm assuming that you want to attract a big buck. Yes,decoys do work but they have to be used at the right time. I prefer the rut, when the other bucks in the area are at the peak of the rutting activity. I ussually use it combination with a scent attractant. I harvest my own scent from tarsal glands and urine sac from the deer that i kill.
Just make sure for safeties sake to put a blaze orange sash or piece of clothing around it when trasporting it. Take off antlers etc.
I would get one that looks good but doesn't weigh a lot. If you get one that is to bulky you'll end up not bringin it along.