I didn't get any info about the construction techniques required by B&M. I do like to wonder and guess on here like everyone else and I didn't see any reason for removing the supports or footers. That said, I know zero about what is required for a coaster. But still, I like to guess, and often when I do that, I guess wrong. I'm fine with that.
On the other hand, I do have a few very good sources of hyper accurate info, just not coaster construction. You know well that I hit you with likes for your knowledge of construction which I really appreciate!