I was just wondering if there were any plugins that would make it so players couldn't bring items from a new island and give it to a friend. I did see the sign recognizing this problem at noobspawn but I believe that not everybody know about it and a lot of people are doing it. I'm not sure if you guys wanted to put a sign at the main spawn explaining this so people know its illegal, because if new people join and don't know about the sign might just make them want to try it for themselves.
The only way that is possible is that the person loots their starter items on the island. I see this happen all the time so do /list, take screenshots, and post it in the report section. Also if you want to join an island ALL of your ITEMS get deleted with your ISLAND so be careful on your decision!