Good luck - wrasses are smart and if you don't succeed with whatever trap the first time (if it happens to get back out, or you spook it), it'll never go back in - at least that's how it's been for me every single time...
But - the inverted bottle trap works well for a lot of fish (lawnmower blennies especially) and I've actually fished out fish with hooks before (big, mean maroon clowns). Draining the tank obviously works well too, and it's not that stressful on the corals and fish.