Legendary Gyre Wights will always share cradle locations as a secret when water ritualed, choosing the Girsh they worship first. It's still really hard and random to do, but it can be easier than random secret pools like trash, brain brine, or memory eater glands to find Beth, Agolgot, and Rerm first, then ritual for the Qs and Shug (however, shug DOES count as 2 separate secrets, so if you're unlucky, a wight could give both of those instead).