Yes you do. And don't forget to figure in Murphy's Law into the pricing. Expect disaster till you either get it worked out or back out. A couple of guys have tried this plan around here and from what I'm told it's not the pantecea that it sounds like. What are you going to do when you suck something from the pile and jam or worse yet, break your loader. There goes your schedule. At least when you blow them into the pile you control what sticks, logs, rocks and pieces of metal that go into the pile. Personally I hate it when a customer calls and says, "I've already raked them into a pile for you so it should be easy.". I've found all kinds of things in those piles that has the customer saying, "How did that get in there?" or "You mean your machine wouldn't pick that carburetor up?" A little off the subject, it's like when you have a storm and you go to the customer's to clean up the limb damage and the customer has "helped" by piling the branches into a huge tangled mess that you have to dislodge with a chainsaw and then expects a discount for making it easier on you. Most customers haven't got a clue.