juts a quick follow up...
within 15 minutes of me posting the message above that I had switched one of my machines to Mona - Mona's network Hash went from 94 MH/s to 119 MH/s - the highest it has ever been.
well sorry to report... I've switched again and left Mona for a higher paying coin if you're watching and I know you are...

this sounds like way too much work to make a $ 2-3 more an hour.
I like your other idea, point mutiple miners to 4 or so coins and sell high etc.
depending on how much hash you have an extra $3/hour is $36/day or $1,116 / month can be quite substantial. I see people making $1/day mining in the pools.
its not too much work for me to press a few keys to net an extra $1,116 / month.
LOL, I think he is referring to people with decent mh/s, only making $1 per day, and people throwing 400 mh/s at coins like mooncoin with crap value.
My iffy rig can make $1 per day mining on whatever, but using smarterhash can make $2 on $3 on a good day.. Average that into a bunch of $1 per day and it brings the average right up. 30% to 40% is easy, working out the averages versus mining blind.
I do have some hashra's on order, so I've been playing with the larger hashrate they provide and being attentive to the results, and the ROI on them is cut in about half. While the ROI on smarterhash has almost paid itself off in 4 months with my current hash, so smarterhash is pretty much all profit from here..

there's a miner throwing 300 MH/s at this coin.
Now mind you I do pass judgement on anyone for what they choose to mine because they may have ulterior motives but as I write there there are 16 other srcypt coins that pay better daily than Goldcoin.
In fact 4 of them pay over twice at much as Goldcoin, so with this miners 300/Mh/s instead of making $8.35 /day they could be making over $18.00 if they were a SmarterHash member because they'd know which coins are paying the best.