I've never used one of those things. I use needle nose pliers (or my hand) to pull the cable tight and hold the brake arm in, and then tighten the screw with my free hand. There's a hozan you can get for like $22 shipped on ebay, but I've always been too cheap.
Try pulling the cable tight, using a small vice grip clamp the cable so it cant slip, then tighten. What are you doing just adjusting your breaks? If so it just takes a little practice, but all you need is the proper size wrench. Look up how to tighten breaks. I think doing derailers is trickier, I usally pull it a little tighter than I would actually want, but when its all tight its right where I want. It is truly just all in the feel and that just takes practice to gain.
The first $50 in donations go towards paying our monthly server fees and adding new features to the website. Once this goal is reached, we'll see about feeding Matt that burrito.
Buy Matt a Beer
$75.00 of $75.00
Now that we have the bills paid for this month, let's give Matt a hearty thank you by buying him a drink for all the hard work he's done for StP. Hopefully his will help keep him from going insane after a long day of squishing website bugs.
Feed Matt a Burrito
$90.00 of $100.00
Now that the bills are paid and Matt has a beer in his hand, how about showing him your love by rewarding all his hard work with a big fat burrito to put in his mouth. This will keep him alive while programming new features for the website.
Finance the Shopping Cart
$90.00 of $200.00
Now that the bills are paid and Matt is fed, perhaps it's time to start planning for those twilight years under the bridge... if only he had that golden shopping cart all the oogles are bragging about these days.