I suppose it could be easier to aggregate the week's profits and do it once a week or something, but it'd be nice if BTC-Arbs would clarify how he's doing things, so people would have some reasonable expectation of when things would happen. Make it a round every Friday or whatever.
What is there to clarify?
You guys gave him a bunch of coins. He took it. Every so often he pops back in to throw some pennies back to you guys and you guys sit here and take it.