I call this exercise ‘the snow shovel’.
I used to love going out during the snow season, shoveling snow and chopping wood, gosh, what a great shoulder workout. Obviously I wouldn’t literally throw the snow behind me, cause there might be someone back there, but this is a close replication of that movement and then some.
Try this one, and start with the weight light, working out the lower back, rear and medial delts, a bit of biceps, and of course the core, becasue strength starts at the core. And just imagine yourself making a clear path for your neighbors.