I used to tie something very similar using hot glue for the egg.
Always looked like it should work but never had much success.
I think the hot glue is more buoyant than ther materials that and the marabou
always kept it up to high in the water column. ALthouhg I was always fishing moving water, and maybe your situation is different. Looks good though, should work if you can get it down to the fish.
"Nothing's Free" (Dad)