Hooking objects and returning them to base is one of the more popular tasks on FFL game Fieds in recent years. Capturing loops seems to be a common mission that robots have had to perform in past years. Many teams will over think this kind of task and build overly complicated attachments to retrieve the loops. I understand the attraction to build big and complicated for the cool factor, but this is not normally the winning design you want. Having more moving pars just means there are more things to break and go wrong with your attachment. The key to a consistent robot is keeping it simple. The fewer things that can go wrong, the better off your robot will be in the long run.