My fimco 20 gal has a boom about 4 ft long. In the back of my ranger, it covers about 8 ft. The only problem I have - and I could fix it - i cant turn it on and off from inside the cab. The crew cab ranger does not turn very sharp, which presents a problem at the end of the row. For what it is worth, my 20 gallon sprayer covers slightly less than 1 acre in my ranger