There are many good topics floating around on the many different chat subjects, I would like to talk a bit about raising frames.
I am a personal great believer in using man power to raise frames safely, I feel that you have much more control over things providing that you have sufficient bodies around to make it happen.
Mechanical power in an historic sense usually was a gin pole, i have had to utilize it when sufficient man power was not available, but found it less than OK when taking both options into account. I guess the chance of mechanical breakdown is always there to haunt one when the lift takes place and the ropes tighten and you can hear and see the strain as everything slowly settles into its lifting mode.
I always felt very confident when just ropes and pike poles were the main lifting factor.