You should focus more on facts than on emotions when filling out a user report. Yes, I get it, sockpuppetry frustrates us all. It has been a problem ever since I've been here. The description field is for why you think the account should be blocked. Simply saying who the sockpuppeteer is gives us a better idea than begging us to block an account with no reason given. If people don't give a reason, we have to ask why (particularly if it's not an obvious case). If you give a reason, you can save us that extra step.
Yes I understand, not every case is created equally, some have more accounts, others have limited amounts of accounts, so your advice will be taken by me (especially in cases that are more common and prevalent).