I think most of the newer boards (excluding race hulls) have a mast foot fitting. I tried an element 9' 8" recently and this had mast base fittings as well as some strap fittings.
I find SB naming covention for SUP's a little lacking, there isn't a model name written on the SUP just some measurements on size/specs!
The element 9' 8" was a good allrounder by the way, nice glide but still felt loose. The quality of finish looked great.