It wasn't practiced nearly enough how much it's done in the field.
I use about a roll per year, as the A&P-IA, but when I worked the power plant shop at NAS Whidbey, I used a roll per week. Yes I can safety wire.
The first time was on the day where we learned about it, where we had pictures and watch someone do it. The second was when we removed/replaced a prop. Those were the only times I ever recall doing it.
get a roll of wire from AS&S and set of pliers and practice, you can get the bolts too, drill two holes in a piece of iron strap, place the bolts in the holes and tighten, then practice, If you can't do this simple task, you'll be handicapped as a A&P
As for taking things apart, that rarely happened as well. We took apart an engine, mags, and carburetors. We never got to really disassemble anything else.
The crappy thing is, how do I practice safety wring and building a line.
You are required to have the tools and pubs to do the job, so buy them. you are going to be require to have your own tools to get a job, so buy them.
It's not like I have bolts and some safety wire lying around my house, or flexible hose and AN fittings in my garage, so how am I supposed to practice/learn it? Reading about it can only help so much...
http://www.aircraft-tool.com/
Thinking of asking someone at my school to teach me one on one or even talking to an A&P at my flight school about it.