Mine does not "walk" it releases and floats with the water current, when it finds a spot it kind of likes it hangs on, digs in, and calls it home.
UNLESS...the current takes it to a power head where it gets stuck, sucked up and killed. So cover all the power heads with some kind of filter. The anemone has to settle down to one place to call home.
This is what I have learned from owning an anemone:
They are beautiful but they have no eyes and frankly I do not think they have a brain either, an anemone is a mouth with an anus.
The water current is their life, they stick out a tentacle and hope a fish is dumb enough to swim into it. ( I had a lawnmower blenny, and copperbanded butterfly fish who were dumb enough) They have internal lights to mesmerize the fish to get closer, closer then they eat it, or just sting it to death if they are not hungry.