We took our accumulater off. You can cut doubles pretty easy as well as smaller clumps. The head has amazing amount of grip. Tension against the lean a bit with the head and the cut opens up as you go. Sometimes its necessary to cut with the saw without grabbing the tree, then catch the stem as it falls.
Or simply grab the stem you want from the clump and rip it out by the roots. The root structure s
Is usually only on one side and they come pretty easy.
Plan on bending some bars, it comes with the territory