isearch to navigate in your Org-Mode document. I didn’t want to use Helm or Imenu to do it and Org-Mode has a built in solution with
org-goto. Be sure to bind the “pop” key very close-by to make it symmetrical and fast.
(define-key org-mode-map (kbd "s-u") #'org-goto)
(define-key org-mode-map (kbd "s-U") #'org-mark-ring-goto)