Have the Polaris 360 w/extra fine bag, but was curious if pressure cleaning is the best way to pick up beach sand. Most of my dirt is sand since I live 2 blocks from the beach, but my backyard is all deck lumber, so the sand is coming from the air. I find that I need to take apart the cleaner about 2-3 times per season, because the wheels stop moving (sand is jamping the gears). Should I switch to suction cleaner or what is the best automatic cleaner(s) for sand pickup? Txs Gary (Seaside Park, NJ)