Fin plugs are probably the most tiresome topic when it comes to pool surfing. Here's the solution: Plug Shields. These fit on any board with FCS 1, FCS Fusion or FCS 2 plugs. The shields are made of anodized aluminum and are self-adhesive. This makes it practically impossible for you to push your plug into the board.
In this country, the repair of a single FCS2 fin box costs around 80 CHF and the board is at the Dingdoc for 3 weeks. This can definitely get on your nerves and cost you money. This stops immediately with the Plugshields. The installation takes 30 seconds and is good.
You continue to surf your FCS 1 fins (and Knubster) - whether made of rubber, plastic, resin or carbon. If the board is sucked in, you will lose the fin, but your plugs will no longer be pushed into the board.