Planes and Porsches! Which do you think will drain the account faster!
Just kidding. I have only minimal hours but I log about 45 hours week controlling the skies!
That book you posted is rather interesting isn't it. For what it is worth, I am one of the few that has to get an aluminum case repaired. Long story. It is getting a timecert next week. In my case (not pun inteded) the smaller OD of the timecert vs the case saver is a benefit due to the larger spigot bore in the vicinity of the repair.....
Don't rule out using a different method, nothing would ever change if others did not look for new or different solutions. You seem like the type that will do his "due dilligence" before making the final descision. However, if you use something different, it would be great if you could take the time to document it and update its success for the rest of us.
Cheers