Quote from NY0BScalper:
Can't speak for Kershner but I've been around the block and know LOTS of traders from guys who blew out of the business or are about to blow out and surviving on their last few K... to multimillionaires... and I can tell you there are no accurate generalizations that can be made about the typical income stream after X amount of time. The mean and median are going to vary immensely.
Everyone brings different traits to the table.
I know you just want a simple answer but what I'm saying is if the average guy has made -$4800 in 6 months, +$23,400 in 12 months, and +$105,000 in 24 months... the probability that your results would be remotely similar to that "average" is very low. (These numbers I pulled out of my ass.)
I don't mean this in a rude or offensive way at all, but you might be looking for more certainty than you will ever able to find. I would look at the situation as "Do a few guys make HUGE money? OK. Are those guys smarter than me? Are they privy to information I will not be able to gain by looking at public data?" If the answer to those last two questions is "no" then I'd give it a shot based on that.
Again, my comments are (accurate) generalizations about the industry and not specific (or necessarily applicable) to Kershner trading... a firm I know nothing about.