Dancing Once Removed from tidal formations is not easy. There are several strategies that may be used depending upon the call and the starting tidal formation -- tidal waves, as couples tidal waves, and one-faced tidal formations..
Tidal Formations generally look like this example for a Once Removed tidal wave:

tidal start formations.wmf
You may also see inverted lines, 3 and 1 lines on each side and tidal column formations in all sorts of arrangements. These are not seen often.