In the Nature paper, the authors list foldit's Rebuild among tools for manipulating secondary structure, along with Tweak. This doesn't match how I use Rebuild, so I thought I would pose the question here - how do you usually use the Rebuild tool?
I occasionally rebuild an area by hand (although now I prefer remix for hand work), but by far the most use I make of rebuild is in scripts, primarily TvdL enhanced DRW but also some other rebuilder scripts. These scripts function to randomly (more or less) sample a large number of backbone shapes near the current shape. I crank the number of rebuilds per area up to 45 on DRW (I modified the slider to allow this), because I found way back during NewChapter testing that the more rebuilds you try on an area the better the chance of finding points. During the course of a puzzle, regardless of puzzle type, I run enough DRW to generate and compare many thousands of nearby backbone positions, covering the entire length of the protein multiple times. The main reason the old hand-fold-only puzzles were so tedious is that we had to do this sampling by hand, and one's score was largely a product of how many hours one was willing to spend rebuilding the whole protein area by area, by hand, to sample nearby backbone shapes. If the developers want to wean us off rebuild, the best way is to provide another tool that allows this kind of large-scale sampling. IMO the remix library of backbone positions is not large enough yet to compete.
During early game I leave the SS in place while running DRW, but in mid and late game I run it with the default setting changing the whole protein to loop first, so it is not even using SS. Do you use rebuild primarily to manipulate secondary structure?