NoCams, you must be using a different Big Dipper. Mine take less than half a quart; says 1.75 pints on the label. You're lucky tho, my clear dip tank takes a gallon and a half.
The Big and Little Dippers are great, but if you are only doing a set once in a while, a $1 golf club tube and a couple of rubber stoppers works great. You will have to top it up once per dozen, but when the set is done, pour the poly back in the can and toss the tube and get a new tube for the next set. It costs more to clean the tube. Hang on to the stoppers, tho.