out of work again

Was laid off again, working on helicopters in the oil industry. So needless to say with every one else out of work doing what I do, the helicopter job market is saturated with out of work mechanics. Have been thinking about getting into the dent removal business. Has any one worked with any of the companies to give a review on the good, the bad and the ugly? Some say free training, some say minimal investment. Just looking for some feedback. Thanks.