Yes good area George
For me you need to have a very good understanding of the costs involved and pick deals with a very good margin... if costs overrun you can loose all the profit so research is a major key to success and you will get better as you go on. don't expect to make millions from the first deal and don't expect every deal to go perfectly... if you do 3-4 deals per year then expect one to break even or possibly loose a small amount... overall if you stick with it, get better with knowledge you will make money overall.
the other area of risk is the market... if you don't turn around your deal quickly you are open to market fluctuations. pre 2008 it was easy to make money doing this as the market was booming, even without refurbishing people were flipping to make money. Now as the market is increasing a bit more steadily you need to pick deals that you can add real tangible value to. hopefully this means true property developers will success and weed out those who are just trying to make a quick buck from a rising market...
Yes there is money to be made flipping and refurbing BUT pick the right deal and ensure you turn it around quickly and add real, tangible value...