Oh yes. They are. For starters, they’re usually going up above your head, so its a lot of holding things aloft and after a time, your arms get tired. Since they’re meant to be coiled up between use, there is also the ever-present problem of keeping them straight (something I am woefully unqualified to do). Its a struggle that would be helped if I were a little more skilled with the staple gun. By the end of this season, I should be a pro.