When i went there a few weeks ago i was getting at least 1000+ each time. My record, so far has been about 4000 and something. (I was using chinchompas)
It's been proven that pick and mining level don't matter. It's who has the fastest connection and 'clicks on the rock' first is the most likely to get the ore.
smithing. It's always been a nice goal of mine to smith my own stockpile of rune. =) Also, if i ever get a barrow set, then I'll be paying half price for everything =)
I've got 3 but I've got about 125 tokens left so I reckon I could get 1 more if I wanted. =p By the way, if you have a 'safe' amount of rune defenders you can use them to get more rune defenders rather than an adamant one. =)
You said that darts are the fastest weapons in the game. If you look at the database and the difference in speed with throwing knives and darts, you'll see that the knives are one level fast than darts.
I believe some money must go to supplies =/ They aren't working at complete profit and also and reward is split up among the group. It's still a good source of income though =) And as you can see from this specific event, very fun. =p
...Thats a ton of work thats been put into those ideas and images. I like it alot, i wonder if JaGex have even looked at this yet. There needs to be some changes to the current bank setup JaGex have already =/