All in all, there is no single best solution. Number of trees, size of trees, type of trees, soil conditions, slope of land, cost, equipment availability, time, and speed will change what works best. You need to evaluate your situation, needs, and what is the usual practice in your area. How it is dealt with in your area is usually the best indicator. But sometimes thinking out-of-the-box can lead to great solutions. There was a contract in Nebraska to place rock along an irrigation canal banks. All the bidders assumed they would need to build axcess along the banks of the canal. A very labor intensive, costly process. The winning bid was a fraction of every other bid. The bidder placed a barge in the canal with a back hoe on the barge. The bidder would dump rock off a bridge onto the barge. The back hoe was propulsion as well as placing the rock. He made a lot of money on the bid. Have an open mind to ideas. I love the question "How can I best do this?"