I do believe it helps. Cuts down on the sore butt syndrome from having the bike immobilized. I built my own (there are plenty of ideas, plans, and suggestions online) with a couple of industrial vibration isolation mounts, 4 tennis balls, and some 3/4" plywood. Took an afternoon to put it all together. Remember to add in a block to raise your front wheel the same amount as the height of your rocker plate or you'll be riding downhill constantly.