I've been thinking that I ought to write an article about building the deck this past summer.
Heh. Yeah, that's not going to happen. So here's #1 in what will probably be a series.
My railing posts are notched at the bottom and mounted on the outside of the rim joists, and the decking is notched around it. For longer runs, there's still a bit more flex in the railing than I'd like. If I had it to do over, I'd mount the posts on the inside of the joists so they were captured all the way around with the decking.
The downside would be that it'd be even more of a hassle cutting the holes in the decking.