More hassle than its worth in my experience
Matt you've just had a bad experience, but you need to be able to offer someone a full time job to get the best out of them! don't fall at the first hurdle, get up and move forward.
I went through a few employees in the early days when i had helpers as opposed to a full time wc. i didn't have enough work to offer a full time job and could only offer a few days here and there.
So the first thing is you need to be able to offer someone full time employment for them to take you and your company seriously. And for them to want to stick around. Most people can't survive on part time hours. Second is you need to offer someone a decent enough income. if you pay peanuts you get monkeys! and believe me when i say that is true!
You have to try and sound people out, i normally take them down the pub and get them drunk! may not be text book but normally people relax in them situations and you can gage some of what goes on inside their head and find out what kind of person they really are. its also good for team buliding and bonding

next be Firm but fair! no one likes a little hitler but you can't be trampled on yourself. you need to show your teeth every now and then just to keep the house in order but if you treat people with respect you will get it back. The ones that don't show it will be shown the door!
Always remember your not perfect in everything you do and other people have different ways of working so instead of my way or the high way listen to employees as you may actually learn something instead of feeling undermined
employing does work you just need to find the right formula. when you do find the right ones look after them and they won't be going anywhere! a good relationship is about give and take.