I believe I have stumbled across (figuratively speaking) a way to suppress the most troubling PD symptom that I have: the dragging of my left heel when I walk. Over the past year I have been finding that walking any distance was irritating because, unless I consciously focused on the mantra "heel, toe... heel, toe) what would happen when I walked was a constant "skuffing" of my left heel on the ground. I didn't appreciate having to "focus" on walking from A to B instead of going on "automatic pilot" like regular people do.
My wife had hip surgery and while hiking 3-5 miles a day with her (for her recovery), I noticed that I was walking with no "skuffing" what-so-ever. Initially I thought that it was the "concentration" of stepping around stones and over roots.. that focused my attention... that was focusing my mind unconsciously. That was not the case.
Actually it turns out that its the use of a "walking stick" extended out and planted on the surface at the same time that I extend and step forward with my left leg is what is doing it. I have come to believe that there is some mechanism in my brain that compensates for what ever PD has fouled up. It has nothing to do with weight bearing. It is so comforting to walk normally on "automatic pilot" that I now carry a walking stick with me whenever I go anywhere where much walking is involved.
I would be keenly interested in finding out if any other people have made a similar discovery. Perhaps you should "give it a go", as the Aussies say, if you have a similar symptom and and associated frustrations.