Getting Around Chiang Mai

I'm easing in. It was a few days before I felt brave enough to wave down a red songteuw for a ride across town. These "buses" (actually red pickup trucks with benches in the back) don't have any scheduled routes. You flag one down (but not Western style, that motion is considered offensive around here) and tell the driver where you want to go, and he says yes or no depending on where he's bringing his other passengers. Then there's negotiating the price, which is not quite fixed. I've been told it's really important to set that up BEFORE getting in and accepting the ride. A guy from my Thai conversational class told me that he doesn't negotiate price but just gets in, and when he arrives he "throws 20 Baht" (about 70cents) at the driver and runs! Others have told me that it's usually 15B unless you're going a really long ways. So I offered 15B, he accepted, and I got to the Temple landmark that I requested. Now to figure out more of those landmarks and in order to get closer to where I'm going!