Electronic Blackjack

I just went to a casino here in town. All they have is electronic blackjack but I thought I'd give it a shot, see what the rules were and what not.
I don't have nearly enough experience to actually think I would be able to play a +EV game, let alone one from an electronic blackjack. So I assumed I would probably lose the hundred I went in with.
From what I've learned so far I'm guessing the rules were very very bad. 6 decks 2/3 pen, H17, double any two cards, surrender (late I assume). It didn't say double after split so I'll assume thats a no?
I wasn't sure how the shuffling worked on the electronic machine but they had a dealer change on the screen after awhile so my guess was that that was the marking spot for it.
Because it's electronic I could probably get away with wonging in and out very aggressively, and betting as big a spread as my bankroll can allow. Is this a fair assumption? Even on the off chance I do get kicked it's not a big deal.
I suppose I could actually just play when the count is high enough to equal +EV, I really don't know whether there is any risk of heat or not from these things.
What are your thoughts? Is the dealer change marking the shuffle (felt like it we played more then 4 decks before a swap, I don't have much of a feel for this yet though). Assuming it is and I only play on high positive counts do you think I could beat it? Odds are the shuffle is hidden so that would make things pretty tough, is there anyway around it if it is?
The rules suck and the pen is terrible so my guess is that the only way I could win is by only playing positive counts, and then it would be smart to play table min ($2) because my bank roll is way too small.
The table limits were $2-$200 btw, maybe that helps a little if I can afford a max bet that high.
Anyways, whether my game today was -EV or +EV (probably -, I didn't play very well) I still walked about with $1 more then I came in with. Yeah for positive variance xD