Opinions seem to be split about 50/50 on this topic. I've used 30 pound braid for the last ten years and have had great luck with it pulling plugs. I uni-knot about 5 feet of 20 pound mono as a leader and double up the braid before you tie the knot. I fished the Skagit a lot and the I felt like the thin diameter of the braid allowed my plugs to dive deeper in the big water. The 30/20 combo also allowed us to put the screws to fish that might be headed for the timber and it helped get plenty of my plugs back.
Mono has a couple of advantages though. It stretches and let's the plugs run a little more freely and that stretch also might let the fish turn before it feels any tension and can spit the plug out. I didn't notice any difference in hookups when I went to braid and I've left it on all my plug reels ever since.
Not a decisive answer, but at least you know it's worked for me for this long. Keep us posted on what you decide. Interesting stuff...at least to me