ROC is legit, the maths are sound but very simple.
dp/P * 100.
It is still lagging , could be a lot better with more advanced maths.
Any other indicators you guys want me to comment on ?
The math that's directly applicable to markets is boolean algebra. Without that as a basic structure of logic in one's system, it's impossible to build anything of consistency.

W% doesnt work to well in good trends LOL