How about mixing the "conventional" and the "Bob" method?
I'm not trying to defend bob, but I have yet to do a water change in my 29g... all I do is add tap water w/ some instant ocean, and my water parameters are staying very steady. Now.... I know I've only had this tank up for 3 months, but according to all the books I've read, I should've done about 15 water changes by now. I'm also using CC (which I would like to change out, but it came with the tank). My fish and inverts are happy as can be, my rock is growing nicely (although I am about to start adding calcium to get some better colors than green)... And I don't have any Macro's.
Now, I have been keeping all kinds of freshwater fish since I was old enough to reach the top of the tank, and most of this saltwater stuff is very new to me. But, I've learned a whole lot by reading every saltwater book I can get my hands on while my tank was cycling, and from there, I've kind of taken my own approach. So far it's working.... I'm about to try my hand at a couple more difficult fish. My two friends (brothers) who got me involved in the whole SW thing very rarely ever do water changes and their tanks are beautiful.
So, there are instances where bob's method will work. And honestly, it makes perfect sense to me. Don't mask the problem, correct the problem. But the conventional method is just as successful, as is the case with most people on this board.
So... to make a long post longer, everyone do what works for you, and just have fun...