With 3 people already calling one bet i think you could get away with a small raise here...most of these guys probably have the "in for a dime, in for a dollar" mentality and will call just because they've already put money in on this street they feel they've gotta see the next card anyways.
then the pot is that much bigger on the turn so if/when they hit their draws, you'll get that much more out of them. (hopefully because they think they've now sucked out on your lone 8)
Calling isnt a bad play either, but they may be more willing to throw their hands away if you wake up on the turn in a small pot. It is more fun for them to make their hands on the turn and do all the betting&raising for you in these spots though.
Really this is a nice problem to have, you cant go too wrong with either play...although id probably put in a small raise and slowly draw them in while they still think they're drawing live.
Yes, all true, however you stand to make a lot more on the turn. Its possible that a raise, even a small will create check/calls on the turn if anyone is worried about having an over pair, or weak flush etc
especially if someone else has trip 8's that their kicker hasnt paired with, and Yes, i'm willing to gamble on the idea that they wont boat up.
and there is also the flush possibilty.
lots of people would love a re-raise when they make their flush on the turn
Other wise, call is good, let someone lead out the turn, and then raise.