The zip-ties I'm talking about above are like these:
I've found them cheap at Harbor Freight and surprisingly have had no issues with them despite the stores general approach to quality.
They are nice because they stay tight as you cinch them down. Others need a special tool (which I have, costs ~$30) to tighten them and then hold them tight while you stake or crimp them in place. Like I said, they all do the same thing, I just find the metal zip-tie ones to be very easy to use.