Google is getting VERY good at catching spun content so you'd better be talented at manual spins. If they DO catch you, of course they'll spank you... and hard. So anything you use spun content on is inherently AT RISK. Worse yet... Google gets better at finding spun/poor content every year. So in the longrun you're screwed. I'd weight your other options and see if you couldn't find a cheaper source for manually hand written content.
You have seen this type of article before - e.g. "10 Tips To Lose Weight" The key factor about this type of article is that each tip (each paragraph) makes sense in its own right - independently of the rest of the article. So if you can get a bunch of these paragraphs together, then you can mix any number of paragraphs in order to make your new article. The SpinnerChief TIPS plugin will do this task effortlessly for you. Check the details by clicking here
He saw a trainer nearby and asked why these creatures made no effort to get away and just stood there. “Well,” coach stated, “when they are really young and much smaller we use precisely the same size rope to tie them-and, at that age, it is enough to to carry them. As they mature, they can be trained to believe they cannot break away. They believe the rope can still hold them, so they never try to break free.”
Any article rewriter or paraphrasing tool basically scans through the content you provide it in order to look for all the words that it can replace with suitable synonyms or substitutes. Every replaced word will appear bold and highlighted in a colorful text. Clicking on the word will give you details such as original word or other suggestions, you also have an option to add your own word. By clicking on the original word, you can go back to original.
I've ranked websites in the past with spun content, and now they are still on #1 position of google. First year (2014) google found me because my spun was really bad, many paragraphs were just copied and my position drop from #2 to around #20 after a panda update. Later I cleaned all my text with better spun (I didn't buy any article!), my ranking went up again, and with more backlinks I reached #1 and it is still there