Dredge/Trommel Hybrid???

[oragonads]

Has anyone ever seen or heard of a dredge equipped with a trommel? There's a video where a guy has a suction hose set up going into a trommel like a highbanker/dredge combo, but I'm talking about an actual floating dredge with a trommel fabricated onto it.

Here's a quick drawn concept. Pretty bad quality because I took a picture of the paper I drew it on with my phone, sorry.

[oragonads]

I know weight would be an issue but I can't get it out of my head.