Everything is difficult before it is easy!

Anyone know the safest way to tighten the nut on the oil pump drive shaft? The NRHS site says it should be tighened to 70lbs along with some Loctite red to stop it having an RDO and frying the motor. The shaft is too long for an ordinary socket, is there a tightarse way to save me buying a dogbone or deep socket that I might only use once, and how do I lock the shaft so I can tighten it, is there a safe way to take it out or a way to lock the shaft while it's in place?

A big thanks to Scotty for all his help, but I'm going to stop bombarding him with more and more and more questions, swallow my pride and ask the forum.