I don't think you should do it. It's just a game in the end, and unless it's money you don't need, you'll probably regret it. Cheap shielding is when a fellow clan member leaves the clan and then puts down one troop and surrenders, giving you a free shield. This is considered a cheap strategy among high trophy players and the rest of the community, and it's one of the reasons why they can maintain a high trophy count, so they will never lose. This strategy will only work if you're in a high trophy clan. This is all based of what I've heard, and you can find more information from this video: https://www.youtube.com/watch?v=s3iG1lC5c40

