LoDO dry hopping in a bucket

[Argyll Gargoyle]

I ferment in buckets and want to dry hop without opening the lid. My idea is to make a large syringe into a hop pellet holder that can mount air tight to the bucket lid — maybe using a rubber stopper. When it’s time to dry hop, I’ll mash the plunger down, releasing the pellets. Obviously need to attach a cap or something to prevent the pellets from falling in during active ferm. Bonus points if the cap allows CO2 in but keeps the hops dry.
Brilliant idea? Or barking up the wrong tree?