To pick up dirt on a hard surface like asphalt, you sort of grab the soil. Open the bucket and push into the pile with the bulldozer blade. If you are picking up the last of it, rotate the bucket forward(move stick to right) over the pile until the other side of the opening touches the ground. Now both cutting edges of the opening, not the main cutting edges of the bucket like on a regular bucket, are on the ground. Next move stick forward and lift front wheels off of the ground (you need this to keep the bulldozer cutting edge on the ground). I lift the front wheels all the way up. Now the part that takes practice. I put my right hand on the aux lever and reach across with my left to grab the main stick. Start closing the 4 in 1 bucket. With practice you will see when to roll the bucket back with your left hand at the same time. It will take time to learn. You mush adjust the speeds of both but is not that hard to master. It becomes second nature. Continue until the bucket is closed. There might be a small line of dirt if done correctly. Just use a broom or blower. I will someday try to make a video of this for you guys. I just don't know when