I got 14 fills with a fairly wide envelope today (about .9% on both sides) - many more than for a week or so. Decent profit.
As far as stops: they are tricky, of course: stops saved me many'o'times. There were cases when i got taken out of the market at much worse prices than my stop, but seeing the immediately following action, I was happy that it happened, because stocks kept flying against me. On the other hand I got my biggest shakeout ever a few days ago: bought 3K, tried to sell all for profit and sold 300 only. The rest got sold (by my program) at a price $1 - 1.25 lower within 3 seconds - not even enough time to blink. Of course the stock traded $1.50 higher just a minute or two later. This wasn't on some thinly traded obscure stock either... And it behaved well in my tests, too.
cheers,
nimbler