Walking all the way back to the truck, you make it sound like your walking miles to get back to the trailer. I had one of those speed feed heads on my Echo and I run them on both of the Stihls and there more of a pita than anything else. Even going back to the truck is still faster than using a speed feed head. The thing is going back to the truck is something you do routinely any way and if that is an extra step you don't care to take you could always figure someway to take the spool with you.