Yeah, I've been doing this prop trading which should really be called daytrading for a few months now.
It's nontrivial stuff when you come down to it. You can either 1) scalp in and out really fast and hopefully beat transaction cost 2) have a longer horizon like holding for a few hours/maybe a few days if you are swinging it so you can realize a bigger chunk of the move and beat transaction cost that way.
Otherwise, going in and out for a nickel or a few pennies here and there will NOT make you rich if you have the occassional 30/40/50 cents losers that can wipe and entire's day's worth of scalping profits.
But maybe if you are a really good scalper you will only lose 3-4cents?? I dunno. But then if your winners are only 4-5cents then you are basically flat and burning commissions for them.
The only way around it seems is to have an edge/methodology/strategy that is consistently profitable and cut your losses. There seems to be no other way around it. No software system, books, seminars, etc. can give you that exact edge. I think it's kinda personal. It's all in your head in some sense. It's how you consistently "perceive" the market. And perhaps a lil luck.
I'm still working toward that goal. It's seems far off now but it's all possible with enough discipline and practice I suppose... But if you don't think about what you are going to do or plan it out then getting there will be next to impossible..
that's just my 2cents,
trader99