I take the entire hide off of whatever animal I am training for, cut it into 6" x 20" strips, salt it in the referigerator for about 7 days and then use them for drags, tug a war, and just a constant reminder of the correct scent they should be chasing.
I always keep the legs whole, and give them as a chew toy... but keep in mind, I train for deer and hogs.