Hey Brandon, Tie the egg below the heavier fly. The egg will drift a little higher in the water column but the fish see it better than the darker nymph or bugger. I usually use at least two feet and up to 30 inches of ten or twelve pound test directly to the bend of the hook with an improved clinch knot. It doesn't come off, ever. I have dozens of wooly buggers with a tiny knot of fluorcarbon still attached from when I trimmed off the leader or switched bugs. As for sizes, usually I don't go any bigger than a #4, and usually a #6 on the bugger, and anywhere from #6 down to #10 on a TMC 2457 scud hook or heavy wire Gamakatsu octopus egg hook for the Glo Bug. Cast upstream enough so everything sinks well if water is high or fast. Then let the whole setup swing while mending upstream. Let it go all the way to the end...even winter fish will come up as the fly goes through the drift and comes to the surface...although that is rare. Have fun and give us reports on how you do!!!