Certainly there is risk, but proper classifications will greatly minimize the risk. And, not looking for the homerun, just looking for a decent income to live off of. I've paid the 3k for the Kim Snider method, and recovered that money if the first two months. For me it has worked so far. Not ready to put all my resources into it, but as a diversification strategy, I'm willing to keep trying with it for awhile.
As to the many positions concern, I have a maximum of 4 so far (2 in each of may accounts), which makes it easy to keep track of. I'm pretty simple minded, and can't/won't spend more then a couple of hours a month on it.
You can always dip your toe in, rather then go wild. I believe the minimum amount of money to get started is 25,000, which gives you the buffer you need to ride the market up and downs. Tends to limit the players, but even mutual funds have some minimum investments.
Without sounding like a shill/salesman/ or whatever the term is, go to
http://www.kimsnider.com/ and see if it interests you. I was skeptical and still am, but so far it's working for me.