I used a full length one, (13 ft I think) to crack a rear hub nut on a Ford fiesta once..Well I had to use a 10 foot scaffold pole to torque up the four 1" UNC bolts that retain each of the 'slew pots' on my JCB3CX with an 1-1/2" socket. They need to be done up to 980 Newton Metres which is blooming tight ! (But then the slew pots each push the rack back and forth with 14 tons of force)
it was the last resort otherwise it'd have been the gas Axe