I don't have a video of this but I've noticed in dinking around in training mode that the boomerang can consistently take someone from any edge camp spot off the edge. The pull is based on their position in the tornado, so if they're in the top (like say if the boomerang is angling down under them) they get pulled much farther than if it hits them on a level slope.
Tentative strategy vs edgeguarding: tether the edge then edge hop and b-stick a boomerang down behind the edge guarder and tether the edge again. The Gale should pull the enemy off the stage and if they hesitate at all you can let go of the edge, footstool off of them and get back up knocking them to their death.
This would be extremely hard to pull off and has two noteable weakpoints, which are the beginning of your edge hop and it fails if they dodge the boomerang or jump immediatly upon falling off the edge. If they "see what you did there" they could potensially footstool off you. But it's just a thought.